It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Thank you.
Some features of ATS will be disabled while you continue to use an ad-blocker.
Foster figures his mini-weapon of doom cost about $10,000 to build, most of it on trial-and-error research. It runs on a three-cylinder diesel engine and has a 360-degree turret with a working cannon powered by an air tank that can fire golf balls and empty cans of Red Bull.