US also rained down cruise missiles on Yemen http://www.independent.co.uk/news/world/middle-east/us-cruise-missile-parts-found-in-yemeni-village-where-52-died-1

US also rained down cruise missiles on Yemen http://www.independent.co.uk/news/world/middle-east/us-cruise-missile-parts-found-in-yemeni-village-where-52-died-1993253.html http://www.independent.co.uk/news/world/middle-east/us-cruis... so even if drones didn't exist US navy would've been involved anyways.