Explosive

Boom.

Extracted from a video (<a href="http://www.youtube.com/watch?v=cu7_wfozwpE" rel="nofollow"><img src="http://img.youtube.com/vi/cu7_wfozwpE/3.jpg" /></a>) by a US Government agency, <a href="http://en.wikipedia.org/wiki/Wikipedia:Public_domain_resources#U.S._federal_government" rel="nofollow">thus</a> public domain.

<a href="http://www.freesound.org/people/qubodup/" rel="nofollow">Contact me</a> if you have interest in specific sounds for open source or commercial purpose.

<a href="http://commons.wikimedia.org/wiki/File%3AUS_Navy_020712-N-5471P-010_EOD_teams_detonate_expired_ordnance_in_the_Kuwaiti_desert.jpg" rel="nofollow"><img alt="US Navy 020712-N-5471P-010 EOD teams detonate expired ordnance in the Kuwaiti desert" src="http://upload.wikimedia.org/wikipedia/commons/thumb/9/9e/US_Navy_020712-N-5471P-010_EOD_teams_detonate_expired_ordnance_in_the_Kuwaiti_desert.jpg/512px-US_Navy_020712-N-5471P-010_EOD_teams_detonate_expired_ordnance_in_the_Kuwaiti_desert.jpg" /></a>