OV-10 Bronco & CH-53 Jolly Green Giant
Two rows of of OV-10's at NKP. They were used as forward air controllers, to locate and mark targets. There is a row of four Ch-53 helicopters at the left background.
The North American Rockwell OV-10 Bronco is a turboprop-driven light attack and observation aircraft. It was developed in the 1960s as a special aircraft for Counter insurgency (COIN) combat, and one of its primary missions was as a forward air control (FAC) aircraft. It can carry up to three tons of external munitions, and loiter for three or more hours.... From Wikipedia.