Same thing happened in [Afghanistan]( http://abcnews.go.com/blogs/headlines/2014/11/army-lost-nearly-420m-worth-of-equipment-in-afghanistan/), [Iraq]( http://www.washingtonpost.com/wp-dyn/content/article/2007/08/05/AR2007080501299.html), and others. 

The US military is the most powerful in the world - I highly doubt anything is "accidental".