Player Embed Code: Download Embed Share Crossing the DOD 'SkillBridge' Defense.gov Nov. 14, 2019 | 1:00 Retired Marine Corps Gunnery Sgt. Joshua Ladd is just one of many taking part in the Department of Defense SkillBridge Program. In partnership with dozens of companies, service members are allowed to spend up to their last 180 days on duty working in an internship or training program that can lead to a post-military career.