Air America?RUNWAY LIGHTING! (especially useful for when dropping spies and counter-insurgents into enemy territory…. or picking up a load of …well…whatever….)
Used as roadside construction flares.
Damn, you're good!
It was probably the early '70s when the blinking battery lights showed up here. Lost track of barricade lights between the early '50s and the late '60s.When I worked at the family construction company back in the '70s, I occasionally had the job of going out to jobsites and check to make sure they were all still lit and refill them with kerosene