Some impressive explosions have been going off at Cape Canaveral lately.They're all in the name of preventing nuclear war.WESH 2's Dan Billow met an Air Force staff sergeant who's using explosions in an innovative way to help keep America safe.Some explosions are small. Some are big."Those were the fun ones," said Air Force Staff Sgt. Derrick Johnson.Johnson recently came up with an innovative way to measure sound waves more effectively, using an Air Force sensor protected by an improvised cover he made with his mother's sewing machine and off-the-shelf fabric."On top of it is a Sunbrella; basically outdoor lawn furniture fabric," Johnson said.Johnson is part of AFTAC, the Air Force Technical Applications Center at Patrick Air Force Base, which monitors nuclear weapons testing around the world. His innovation may improve how those nuclear detonations are measured, but he needed to test it.Fortunately, there's an Air Force bomb squad on the base.The explosive ordnance disposal team set off dynamite, C4 and TNT -- part of their required training anyway -- to help Johnson find out if his protective cover would work. It did. So now, the little-known organization meant to protect us all from nuclear war has a better tool in its kit -- one that might have cost $5,000 if obtained the normal way, but with the help of Johnson and his mother's sewing machine, not to mention the EOD team, cost only $500.The Air Force has also used rocket launches at the Cape to calibrate that sound-sensing equipment.