This work is called 'Have Guns, Will Travel'. It's a 16x20, done in acrylics and 1 Shot enamel on claybord. Vintage David!
The painting is a commission for this highly decorated Vietnam Vet who was a gunner for the US Marine Corps and flew hundreds of missions in a UH-1E chopper.
From Dave's site: They were shot down twice over the course of a few years and nicknamed "The Warriors" with the slogan “Have Guns, Will Travel.” On June 21, 1969, they dropped the first helicopter bomb.