Eventually, the U.S. Navy lost all three U.S.-built rigid airships to accidents. USS "Shenandoah" flew into a severe thunderstorm over Noble County, Ohio while on a poorly planned publicity flight on 3 September 1925. It broke into pieces, killing 14 of its crew. USS "Akron" was caught in a severe storm and flown into the surface of the sea off the shore of New Jersey on 3 April 1933. It carried no life boats and few life vests, so 73 of its crew of 76 died from drowning or hypothermia. USS "Macon" was lost after suffering a structural failure offshore near Point Sur Lighthouse on 12 February 1935. The failure caused a loss of gas, which was made much worse when the aircraft was driven over pressure height causing it to lose too much helium to maintain flight. Only two of its crew of 83 died in the crash thanks to the inclusion of life jackets and inflatable rafts after the "Akron" disaster.