When you are flying a Cessna 170 at bug-top level in Southeast Asia, fire suppression is relative Posted on June 29, 2018 by laststandonzombieisland Leave a comment Two M3 grease gun smg submachine guns mounted to a Cessna O-1 Bird Dog for suppressing fire Vietnam: (Source: oftheirownaccord.com) Share this:Share Print (Opens in new window) Print Email a link to a friend (Opens in new window) Email Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Share on Reddit (Opens in new window) Reddit Like this:Like Loading… Related tagged with cessna, m3 grease gun, O-1 birddog US Army vietnam weapons