I have a friend here at Merritt Island that needed to fix a leaking fuel tank in his Glassair .He borrowed his buddies shop vac to create a suction in the fuel tank to suck the resin into the suspected void . I heard the explosion on the other side of the field . Luckily he had stepped out of the hangar and neither he nor the plane were hurt . Lets be careful out there !( at least he was smart enough not to use his own shop vac )