Robert Gray Army Airfield to Boeing Fld/King County International GRK → BFI
1,495 nautical miles (1,720 statute miles) northwest on a straight line, true course 318°, about 314° magnetic at the departure end (variation 4E). At 120 knots that is 12 h 03 min at the quickest height in today's winds (4,500 ft, a 4-knot tailwind), arriving about 6:52 am PDT (13:52 UTC), after sunset at the destination. Right now GRK is VFR, wind from the south-southeast (160°) at 4 knots; BFI is VFR, wind from the northwest (310°) at 6 knots. For planning, not a briefing: the legal preflight briefing comes from Flight Service (1-800-WX-BRIEF) or the FAA's own tools. Airlines fly this pair: 3 flights in the DOT's last twelve reported months, the route's page.
The route the straight line, the warnings crossed, restrictions, pilot reports and the airports along the way · click a mark for its words
Green, blue, red and purple airport dots are the flying conditions reported there now (VFR, marginal VFR, IFR, low IFR); grey means no report. Red areas are SIGMETs, orange areas AIRMETs, hatched red areas temporary flight restrictions. Map tiles: OpenFreeMap, data © OpenStreetMap contributors.
Warnings the route crosses SIGMETs and AIRMETs whose area the line passes through or comes within 25 nm of
- SIGMET 1W: thunderstorms (a convective SIGMET) up to 34,000 ft, moving from the southwest at 40 knots, until 9:55 pm CDT (02:55 UTC). Over the route from 488 to 767 nm out.
as issued
WSUS33 KKCI 120055 MKCW WST 120055 CONVECTIVE SIGMET 1W VALID UNTIL 0255Z CO NM WY AZ UT FROM 40NNW CHE-40WNW TBE-60WNW CME-40N SJN-40ESE MTU-40NNW CHE AREA SEV TS MOV FROM 23040KT. TOPS TO FL340. WIND GUSTS TO 60KT POSS.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 409 to 937 nm out.
- AIRMET TANGO 2W: moderate turbulence above 18,000 ft from 35,000 ft to 45,000 ft. Near the route, 449 nm along the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 478 to 1186 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 528 to 658 nm out.
- AIRMET TANGO 1W: low-level wind shear (due to air speed loss or gain of 20 knots or more below 2,000 ft above the ground). Over the route from 558 to 857 nm out.
- AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 738 to 1166 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 748 to 1326 nm out.
- AIRMET TANGO 5W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Over the route from 757 to 807 nm out.
- AIRMET SIERRA 2E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 817 to 847 nm out.
- AIRMET SIERRA 4E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 937 to 1126 nm out.
- AIRMET ZULU 2C: moderate icing up to 16,000 ft. Over the route from 1236 to 1395 nm out.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 140 nm of the route.
A SIGMET warns of weather hazardous to all aircraft; an AIRMET of weather that matters to small aircraft and to flying without instruments. "From 60 to 180 nm out" is measured along the route from GRK.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- UAL2238 at 38,000 ft, 25 nm southwest, 6:44 pm CDT (23:44 UTC): moderate turbulence, wind 244° at 64 knots. 608 nm along the route, 25 nm southwest of the line.
as filed, and in English
ARP UAL2238 3807N 10649W 2344 F380 244/064KT TB CONT MOD TURB IC
- Report
- a routine report filed through ARP
- C680A at 16,000 ft, 23 nm northeast, 5:59 pm CDT (22:59 UTC): moderate turbulence, scattered clouds above 16,000 ft, remarks: during the descent. 658 nm along the route, 23 nm northeast of the line.
as filed, and in English
ASE UA /OV HAERI/TM 2259/FL160/TP C680A/SK SCT160/TB CONS MOD/RM DURD
- Report
- a routine report filed through ASE
- Where
- haeri
- Time
- 22:59 UTC
- Height
- at 16,000 ft
- Aircraft
- C680A
- Sky
- scattered clouds from 16,000 ft
- Turbulence
- continuous moderate
- Remarks
- during the descent
- C650 at 40,000 ft, 31 nm northeast, 6:48 pm CDT (23:48 UTC): moderate turbulence, remarks: ZDVWC-03. 668 nm along the route, 31 nm northeast of the line.
as filed, and in English
ASE UA /OV DBL/TM 2348/FL400/TP C650/TB MOD /RM ZDVWC-03
- Report
- a routine report filed through ASE
- Where
- over DBL
- Time
- 23:48 UTC
- Height
- at 40,000 ft
- Aircraft
- C650
- Turbulence
- moderate
- Remarks
- ZDVWC-03
- E75L at 28,000 ft, 49 nm northeast, 8:31 pm CDT (01:31 UTC): moderate turbulence, remarks: ZDVWC-03. 698 nm along the route, 49 nm northeast of the line.
as filed, and in English
EEO UA /OV EKR085036/TM 0131/FL280/TP E75L/TB MOD/RM ZDVWC-03
- Report
- a routine report filed through EEO
- Where
- 36 nm east (085°) of EKR
- Time
- 01:31 UTC
- Height
- at 28,000 ft
- Aircraft
- E75L
- Turbulence
- moderate
- Remarks
- ZDVWC-03
- E170 at 10,000 ft, 38 nm southwest, 6:41 pm CDT (23:41 UTC): moderate turbulence up to 10,000 ft, remarks: during the climb. 708 nm along the route, 38 nm southwest of the line.
as filed, and in English
GJT UA /OV GJT144009/TM 2341/FL100/TP E170/TB MOD SFC-100/RM DURC
- Report
- a routine report filed through GJT
- Where
- 9 nm southeast (144°) of GJT
- Time
- 23:41 UTC
- Height
- at 10,000 ft
- Aircraft
- E170
- Turbulence
- moderate from the surface to 10,000 ft
- Remarks
- during the climb
- A339 at 16,000 ft, 37 nm southwest, 6:35 pm CDT (23:35 UTC): moderate chop turbulence up to 16,000 ft, remarks: during the climb zlc. 907 nm along the route, 37 nm southwest of the line.
as filed, and in English
OGD UA /OV OGD063012/TM 2335/FL160/TP A339/TB MOD CHOP 160 BLO/RM DURC /ZLC
- Report
- a routine report filed through OGD
- Where
- 12 nm northeast (063°) of OGD
- Time
- 23:35 UTC
- Height
- at 16,000 ft
- Aircraft
- A339
- Turbulence
- moderate chop at 16,000 ft below
- Remarks
- during the climb zlc
- E75L at 14,500 ft, 43 nm southwest, 6:05 pm CDT (23:05 UTC): moderate turbulence up to 15,800 ft, heavy rain, remarks: during the climb zlc. 907 nm along the route, 43 nm southwest of the line.
as filed, and in English
OGD UA /OV OGD086008/TM 2305/FL145/TP E75L/WX +RA/TB MOD 158 BLO/RM DURC /ZLC
- Report
- a routine report filed through OGD
- Where
- 8 nm east (086°) of OGD
- Time
- 23:05 UTC
- Height
- at 14,500 ft
- Aircraft
- E75L
- Weather
- heavy rain
- Turbulence
- moderate at 15,800 ft below
- Remarks
- during the climb zlc
- A320 at 35,000 ft, 24 nm northeast, 7:43 pm CDT (00:43 UTC): light chop turbulence, remarks: ZFW47. 259 nm along the route, 24 nm northeast of the line.
as filed, and in English
CDS UA /OV CDS270030/TM 0043/FL350/TP A320/TB LGT CHOP/RM ZFW47
- Report
- a routine report filed through CDS
- Where
- 30 nm west (270°) of CDS
- Time
- 00:43 UTC
- Height
- at 35,000 ft
- Aircraft
- A320
- Turbulence
- light chop
- Remarks
- ZFW47
- E145 at 7,400 ft, 25 nm southwest, 7:15 pm CDT (00:15 UTC): remarks: reported below minimums visibility 1/2SM ZDVWC-41. 548 nm along the route, 25 nm southwest of the line.
as filed, and in English
ALS UA /OV ALS/TM 0015/FL074/TP E145/SK VASE UNKN/RM REPORTED BLO MINIMUMS VIS 1/2SM ZDVWC-41
- Report
- a routine report filed through ALS
- Where
- over ALS
- Time
- 00:15 UTC
- Height
- at 7,400 ft
- Aircraft
- E145
- Sky
- vase unknown
- Remarks
- reported below minimums visibility 1/2SM ZDVWC-41
- E145 at 7,400 ft, 23 nm southwest, 7:15 pm CDT (00:15 UTC): remarks: base reported below minimums 1/2 miles visibility ZDVWC-41. 548 nm along the route, 23 nm southwest of the line.
as filed, and in English
ALS UA /OV KALS/TM 0015/FL074/TP E145/RM BASE REPORTED BELOW MINIMUMS 1/2 SM VIS ZDVWC-41
- Report
- a routine report filed through ALS
- Where
- over KALS
- Time
- 00:15 UTC
- Height
- at 7,400 ft
- Aircraft
- E145
- Remarks
- base reported below minimums 1/2 miles visibility ZDVWC-41
- CL35 at 43,000 ft, 28 nm northeast, 7:21 pm CDT (00:21 UTC): remarks: mtw +/-300FT zdvwc. 558 nm along the route, 28 nm northeast of the line.
as filed, and in English
PUB UA /OV PUB250040/TM 0021/FL430/TP CL35/RM MTW +/-300FT ZDVWC
- Report
- a routine report filed through PUB
- Where
- 40 nm west (250°) of PUB
- Time
- 00:21 UTC
- Height
- at 43,000 ft
- Aircraft
- CL35
- Remarks
- mtw +/-300FT zdvwc
- BE9L at 20,000 ft, 8 nm southwest, 7:34 pm CDT (00:34 UTC): light rime icing, -9 °C, remarks: ZDVWC-41. 578 nm along the route, 8 nm southwest of the line.
as filed, and in English
ALS UA /OV ALS330035/TM 0034/FL200/TP BE9L/TA M09/IC LGT RIME/RM ZDVWC-41
- Report
- a routine report filed through ALS
- Where
- 35 nm northwest (330°) of ALS
- Time
- 00:34 UTC
- Height
- at 20,000 ft
- Aircraft
- BE9L
- Temperature
- −9 °C
- Icing
- light rime
- Remarks
- ZDVWC-41
- PRM1 at 41,000 ft, 32 nm southwest, 6:38 pm CDT (23:38 UTC): light to moderate clear-air turbulence, remarks: ZDVWC-46. 578 nm along the route, 32 nm southwest of the line.
as filed, and in English
ALS UA /OV ALS290035/TM 2338/FL410/TP PRM1/TB LGT-MOD CAT/RM ZDVWC-46
- Report
- a routine report filed through ALS
- Where
- 35 nm west (290°) of ALS
- Time
- 23:38 UTC
- Height
- at 41,000 ft
- Aircraft
- PRM1
- Turbulence
- light to moderate clear-air turbulence
- Remarks
- ZDVWC-46
- SW4 at 20,000 ft, 10 nm south, 8:00 pm CDT (01:00 UTC): light rime icing, 0 °C, remarks: ZDVWC-12. 638 nm along the route, 10 nm south of the line.
as filed, and in English
GUC UA /OV GUC/TM 0100/FL200/TP SW4/TA 00/IC LGT RIME/RM ZDVWC-12
- Report
- a routine report filed through GUC
- Where
- over GUC
- Time
- 01:00 UTC
- Height
- at 20,000 ft
- Aircraft
- SW4
- Temperature
- 0 °C
- Icing
- light rime
- Remarks
- ZDVWC-12
15 more routine reports are on the map.
Winds aloft along the route, and the time en route the forecast for use 20:00–03:00 UTC · at 120 knots true airspeed
The westbound cruising heights for this course (VFR: even thousands plus 500 ft; above 18,000 ft the forecast levels), with the wind averaged along the line from the 13 forecast points nearest it (ABI, LBB, AMA, TCC, ALS, GJT, RKS, SLC, PIH, BOI, LWS, YKM, SEA). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 4,500 ft | 200° at 7 kt | −4 kt | 14 °C | 124 kt | 12 h 03 min | 6:52 am PDT (13:52 UTC) |
| 6,500 ft | 200° at 7 kt | −3 kt | 7 °C | 123 kt | 12 h 09 min | 6:58 am PDT (13:58 UTC) |
| 8,500 ft | 210° at 13 kt | −3 kt | 5 °C | 123 kt | 12 h 09 min | 6:58 am PDT (13:58 UTC) |
| 10,500 ft | 210° at 19 kt | −4 kt | 3 °C | 124 kt | 12 h 03 min | 6:52 am PDT (13:52 UTC) |
| 12,500 ft | 220° at 23 kt | −4 kt | -1 °C | 124 kt | 12 h 03 min | 6:52 am PDT (13:52 UTC) |
| 14,500 ft | 220° at 26 kt | −4 kt | -4 °C | 124 kt | 12 h 03 min | 6:52 am PDT (13:52 UTC) |
| 16,500 ft | 220° at 29 kt | −3 kt | -9 °C | 123 kt | 12 h 09 min | 6:58 am PDT (13:58 UTC) |
| 18,000 ft FL180 | 220° at 31 kt | −3 kt | -12 °C | 123 kt | 12 h 09 min | 6:58 am PDT (13:58 UTC) |
| 24,000 ft FL240 | 220° at 34 kt | −1 kt | -21 °C | 121 kt | 12 h 21 min | 7:10 am PDT (14:10 UTC) |
| 30,000 ft FL300 | 230° at 44 kt | +3 kt | -31 °C | 117 kt | 12 h 47 min | 7:36 am PDT (14:36 UTC) |
| 34,000 ft FL340 | 240° at 48 kt | +13 kt | -37 °C | 107 kt | 13 h 58 min | 8:47 am PDT (15:47 UTC) |
| 39,000 ft FL390 | 240° at 48 kt | +17 kt | -46 °C | 103 kt | 14 h 31 min | 9:20 am PDT (16:20 UTC) |
Based on data from the 11th at 18:00 UTC; valid on the 12th at 00:00 UTC for use 20:00 to 03:00 UTC; temperatures above 24,000 ft are below zero. Heights are above sea level; a height is left out when the forecast has no wind for it over most of the line (the ground is higher). Ground speed is the airspeed less the headwind; the time en route is for the straight line and ignores climb, descent and routing around weather.
The forecast points as issued
| Point | From | 3,000 | 6,000 | 9,000 | 12,000 | 18,000 | 24,000 | 30,000 | 34,000 | 39,000 |
|---|---|---|---|---|---|---|---|---|---|---|
| ABI | used from 0 nm out; 100 nm from the line | 180/26 17° | 220/18 12° | 230/25 8° | 230/28 -5° | 240/29 -14° | 250/35 -28° | 270/37 -39° | 280/37 -51° | |
| LBB | used from 199 nm out; 51 nm from the line | 180/26 20° | 210/21 13° | 230/21 7° | 250/25 -5° | 250/34 -16° | 250/52 -28° | 260/47 -38° | 260/49 -50° | |
| AMA | used from 299 nm out; 27 nm from the line | 190/28 | 220/26 14° | 230/27 7° | 250/24 -6° | 250/32 -16° | 240/51 -28° | 250/52 -38° | 250/51 -50° | |
| TCC | used from 349 nm out; 43 nm from the line | 200/26 | 200/28 14° | 220/25 7° | 230/28 -7° | 240/41 -19° | 240/62 -28° | 250/61 -37° | 250/49 -49° | |
| ALS | used from 449 nm out; 81 nm from the line | 210/32 5° | 230/48 -8° | 230/49 -20° | 230/78 -30° | 240/74 -36° | 240/61 -47° | |||
| GJT | used from 648 nm out; 52 nm from the line | 210/40 11° | 210/46 3° | 210/61 -10° | 210/68 -22° | 220/57 -29° | 230/59 -36° | 240/66 -46° | ||
| RKS | used from 797 nm out; 60 nm from the line | 190/43 | 210/65 3° | 210/57 -9° | 210/56 -21° | 210/47 -33° | 230/63 -37° | 240/77 -46° | ||
| SLC | used from 847 nm out; 68 nm from the line | 280/8 | 210/39 5° | 210/52 -1° | 200/50 -11° | 200/56 -23° | 220/61 -28° | 230/73 -37° | 230/73 -45° | |
| PIH | used from 947 nm out; 34 nm from the line | 270/10 | 270/13 1° | 210/16 -2° | 200/56 -11° | 200/51 -23° | 200/68 -33° | 220/77 -37° | 230/73 -44° | |
| BOI | used from 1096 nm out; 57 nm from the line | 330/14 4° | 230/5 -2° | 220/20 -7° | 210/37 -20° | 200/59 -26° | 200/67 -34° | 210/73 -35° | 220/62 -41° | |
| LWS | used from 1196 nm out; 86 nm from the line | 010/5 | 050/14 -2° | 040/12 -6° | 160/7 -10° | 190/30 -22° | 200/54 -27° | 200/48 -35° | 210/40 -37° | 230/32 -41° |
| YKM | used from 1346 nm out; 34 nm from the line | 030/16 | 020/18 0° | 030/30 -8° | 030/23 -13° | 020/40 -23° | 010/73 -29° | 010/54 -36° | 360/29 -37° | 330/16 -40° |
| SEA | used from 1445 nm out; 23 nm from the line | 360/9 | 350/10 1° | 010/10 -5° | 030/20 -11° | 020/60 -17° | 010/86 -26° | 360/90 -40° | 010/68 -42° | 360/31 -43° |
The weather now: both ends and the airports along the way public airports with a weather report within 25 nm of the line, one for each stretch
| Airport | Where | Conditions | Wind | Visibility | Ceiling | Elevation | Reported |
|---|---|---|---|---|---|---|---|
| GRK Fort Hood (Killeen), TX | departure | VFR | from the south-southeast (160°) at 4 knots | 10+ mi | none | 1,015 ft | 7:55 pm CDT (00:55 UTC) |
| ABI Abilene, TX | 120 nm out, 16 nm southwest of the line, tower | VFR | from the south-southeast (160°) at 15 knots, gusting to 23 | 10+ mi | none | 1,790 ft | 00:52 UTC |
| PVW Plainview, TX | 269 nm out, 18 nm southwest of the line | VFR | from the south (180°) at 11 knots | 10+ mi | none | 3,374 ft | 01:35 UTC |
| HRX Hereford, TX | 319 nm out, 11 nm southwest of the line | reported, no category | from the south (190°) at 15 knots, gusting to 20 | 10+ mi | none | 3,787 ft | 01:30 UTC |
| RTN Raton, NM | 478 nm out, 7 nm southwest of the line | VFR Sky: a broken layer at 9,000 feet | from the south-southwest (210°) at 12 knots | 10+ mi | 9,000 ft | 6,352 ft | 00:53 UTC |
| ASE Aspen, CO | 658 nm out, 23 nm northeast of the line, tower | VFR Sky: a broken layer at 7,500 feet, overcast at 9,000 feet Weather: light rain | from the west-northwest (300°) at 12 knots, gusting to 15 | 10+ mi | 7,500 ft | 7,837 ft | 00:53 UTC |
| VEL Vernal, UT | 797 nm out, 6 nm southwest of the line | VFR Sky: a broken layer at 8,000 feet, overcast at 11,000 feet Weather: light rain | from the southwest (220°) at 19 knots, gusting to 27 | 10+ mi | 8,000 ft | 5,274 ft | 00:53 UTC |
| PIH Pocatello, ID | 997 nm out, 18 nm northeast of the line, tower | VFR Sky: scattered clouds at 1,200 feet, a broken layer at 6,000 feet, overcast at 8,500 feet Weather: light rain | from the southwest (230°) at 9 knots | 10+ mi | 6,000 ft | 4,451 ft | 00:53 UTC |
| SUN Hailey, ID | 1076 nm out, 5 nm west of the line, tower | marginal VFR Sky: scattered clouds at 300 feet, overcast at 1,500 feet Weather: light rain | calm | 5 mi | 1,500 ft | 5,319 ft | 01:24 UTC |
| PDT Pendleton, OR | 1316 nm out, 12 nm southwest of the line, tower | VFR Sky: overcast at 6,000 feet | from the north-northeast (030°) at 3 knots | 10+ mi | 6,000 ft | 1,494 ft | 00:53 UTC |
| PSC Pasco, WA | 1346 nm out, 9 nm northeast of the line, tower | VFR Sky: overcast at 9,500 feet | from the northeast (040°) at 11 knots | 10+ mi | 9,500 ft | 410 ft | 00:53 UTC |
| BFI Seattle, WA | destination | VFR | from the northwest (310°) at 6 knots | 10+ mi | none | 21 ft | 5:53 pm PDT (00:53 UTC) |
The highest airport on this list sits at 7,837 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At BFI when you get there the forecast at the estimated arrival, 6:52 am PDT (13:52 UTC)
Wind light and variable, visibility more than 6 miles, patches of fog, clear skies VFR
The whole forecast for BFI
- From Sun 5:00 pm PDT (00:00 UTC): wind from the north-northwest at 8 knots, gusting to 18, visibility more than 6 miles, a few clouds at 5,000 feet
- From Sun 7:00 pm PDT (02:00 UTC): wind light and variable, visibility more than 6 miles, clear skies
- From Mon 3:00 am PDT (10:00 UTC): wind light and variable, visibility more than 6 miles, patches of fog, clear skies
- From Mon 9:00 am PDT (16:00 UTC): wind from the south-southeast at 3 knots, visibility more than 6 miles, clear skies
- From Mon 12:00 pm PDT (19:00 UTC): wind from the west-southwest at 3 knots, visibility more than 6 miles, clear skies
- From Mon 2:00 pm PDT (21:00 UTC): wind from the west at 5 knots, visibility more than 6 miles, clear skies
The forecast for GRK, the departure
- From Sun 7:00 pm CDT (00:00 UTC): wind from the south-southeast at 9 knots, scattered clouds at 6,000 feet
- Changing between Mon 3:00 am CDT (08:00 UTC) and 4:00 am CDT (09:00 UTC) to: wind from the southeast at 6 knots, a broken layer at 1,500 feet
- Changing between Mon 4:00 pm CDT (21:00 UTC) and 5:00 pm CDT (22:00 UTC) to: wind from the south-southeast at 12 knots, a broken layer at 5,000 feet
- Changing between Mon 10:00 pm CDT (03:00 UTC) and 11:00 pm CDT (04:00 UTC) to: wind from the south-southeast at 9 knots, a broken layer at 1,500 feet
Temporary flight restrictions on the line or within 25 nm of it
No temporary flight restriction on or near this route right now.
Daylight
Sunset at GRK 7:03 pm CDT (00:03 UTC), at BFI 6:27 pm PDT (01:27 UTC) (civil twilight ends 6:58 pm PDT (01:58 UTC)). At 120 knots the arrival at BFI is before sunrise there (7:23 am PDT (14:23 UTC)).
Each restriction opens the FAA's own page with the exact area, heights and times. Ordinary notices to air missions (closed runways, lights out) are not shown: the FAA's notice search is not open to sites like this one at this time.
Radar and forecast charts for the regions crossed government pictures, the latest each time the page loads
Sources: the Aviation Weather Center's data service (SIGMETs, AIRMETs, graphical AIRMETs, pilot reports, winds and temperatures aloft, observations and terminal forecasts), the National Weather Service radar, the Weather Prediction Center's charts, the FAA's temporary flight restriction list and shapes, and the FAA's airport file for the positions, elevations and magnetic variation. Fetched when the page is viewed and kept a few minutes. Each leg is the straight line between its two airports; airways, terrain and airspace are not considered. The airports in detail: Robert Gray Army Airfield, Boeing Fld/King County International.