These are Military themed Zippo Lighters.
From the Armed Forces mostly the United States.
Zippo Vietnam Fly United
A Zippo Vietnam Fly United done on a Brushed Chrome 1967 Zippo Lighter. A unused 1967 Zippo Lighter with several different styles of engraving for service in Vietnam, though very nicely done the FLY UNITED logo was not adopted till the 1971-72 362nd Aviation Co so pretty much this is a fake or done after the fact as almost all Vietnam Zippo Lighters are today. Value $80 to $90 just for being a nice 1967 Zippo. Condition very good and unused.