How do I get an outside line? <a href=" http://www.oktandrammen.no/has-anyone-used-stendra.pdf ">how long does stendra last</a> In the U.S. and elsewhere, the number of civil helicopter crashes has stayed basically flat over the past decade at around 400 accidents annually world-wide. Despite extensive industry efforts and high-profile pledges to raise the safety bar, the global fatal-accident rate for all choppers has improved only slightly since 2007; and the rate for those used in oil-and-gas operations also has remained largely unchanged through most of those years.