Air Force Captain Donnelly is wearing a senior pilots wings. The single star means he participated in one war. He's also wearing a Vietnam Service Medal ribbon, a Vietnam Campaign Medal ribbon, a Good Conduct Medal ribbon, a Bronze Star ribbon, a Purple Heart ribbon, and one undetermined ribbon.
Wojo's UFO sighting seems to be inspired by Project Blue Book, which was spearheaded by the United States Air Force to investigate unidentified aerial phenomena. It was disbanded on December 17, 1969.
Mr and Mrs. Brauer, played by Peter Hobbs and Doris Roberts, would show up again in Agent Orange (1980) and Wojo's Girl: Part 1 (1979).