Instruct: Classify a given review as either positive or negative.
Query: An entertaining Black Comedy on the War of Vietnam.

When a Rookie Pilot (Robert Downey Jr.) got fired from his job. Now he`s been hired by the U.S. Army to be sent in Vietnam in the Jungles of Loas. When he meets his new partner in Piloting (Mel Gibson) but the Two are Cross fired between U.S. Missions and Behind Enemy Lines.Directed by Roger Spottiswoode (The Best of Times, The Sixth Day, Terror Train) made This winning underrated comedy was a Box Ofiice Hit in the Summer of 1990. Gibson and Downey Jr. delivers good comic performances in this adventure comedy. Originally meant to be a Darker Comedy. Super 35. Grade:B+.