The airport code for Henry Post Army Airfield is FSI.
There is no airport in Waurika, Oklahoma. The nearest to Wauricka are Temple Airport in Uninc Cotton County west on US 70, or KAS Orchard Airport in Commanche, north on US 80. There are several in or near Lawton, including Henry Post Army Airfield at Fr. Sill.
Tipton Airfield is connected with the post, but the nearest commercial airport is BWI.
Pylon
The airport code for Wiley Post Airport is PWA.
The airport code for Ogoki Post Airport is YOG.
If their post has a usable airfield within range to not require a stop in the US enroute, they'll go there (e.g., soldiers from Fort Drum would use that airfield, soldiers from Fort Bragg would use Pope AFB, etc.). Otherwise, the POE is determined by what's enroute to the final destination.
The airport code for Southampton Airport is SOU.
FPO = Fleet post office for Navy personel. Apo = Army post office for Army personel
Henry Post was born on 1885-06-15.
Henry Post died on 1914-02-09.
Heathrow Airport is so big that it has many post codes. The post code for most of Terminal 4 is TW6 3XZ
Yes there is an airport post office as well as various post boxes throughout the airport. See the related link for the location of each one.