When I was in Panama City (mid-60's), the DingBats didn't exist. The "LaGuardia National" were the army/police/everything. Most drove around in battleship grey '57 Chevy P/U's with tin "camper shells" over the bed, open ended. Inside were Browning M1919's pointing out the rear. I was there 18 months, they had about two coups during that time, so there was a lot of .30 cal flying around. When that went on, there was no safe place outside of the Canal Zone...