This new Washington-made drone can remain airborne for days, could help spot fishery poachers
August 7, 2015
http://www.bizjournals.com/seattle/news/2015/08/05/this-new-washington-made-drone-can-hover-for-days.html?ana=twt
August 7, 2015
http://www.bizjournals.com/seattle/news/2015/08/05/this-new-washington-made-drone-can-hover-for-days.html?ana=twt