3NextGen UAS research, develop- ment and demonstration roadmap. Next Generation Air Transporta- tion System Joint Planning and Development Office, 2012.
4X-47B unmanned combat air sys- tem completes first at-sea tests. http://www, navy. rail/submit/ display, asp? story_id = 71156, 2012-12-18.
5Russia to test fly first combat drone in 2014. http .//en. rian. ru/military _ news/20120420/172931396, html, 2012-04-20.