Apparently not under enough guard ??
Iran seizes ship traveling under U.S. guard
http://www.wnd.com/2015/04/iran-seizes-ship-traveling-under-u-s-guard/?cat_orig=world
Iran seizes ship traveling under U.S. guard
http://www.wnd.com/2015/04/iran-seizes-ship-traveling-under-u-s-guard/?cat_orig=world