Active transport is the movement of molecules across a cell membrane in the direction against some gradient or other obstructing factor (often a concentration gradient).
NAS Whiting Field Directory. Naval Air Station Whiting Field is located in Milton, Florida and serves as a pilot training base for the Navy, Marine Corps, Coast Guard and Air Force. Flight students complete their training under Training Air Wing 5 flying the Beechcraft T-6 Texan II for primary flight education and the TH-57 Sea Ranger for advanced helicopter training.
Nonetheless, the short cross-field former runway, near the southern end of Hurlburt Field's main runway, is now named the Doolittle Taxiway. Other Eglin fields, including Wagner Field/Eglin Auxiliary Field No. 1, and Duke Field/Eglin Auxiliary Field No. 3, were used during this training.