Browning was born in the decade of the Civil War, and his "Ma Deuce" .50 cal. is still putting major hurt on the bad guys, in Iran and Afghanistan today.
BTW, here's a photo of Hiller's best known design, the H-23A (of M*A*S*H fame).
I learned to fly those in '69. Was really proud when I could hover over one spot (the state of Texas).
Anyone that has flown helos knows what I mean!!!!
T