In episode 54 of Surefire Field Notes, Will Petty of Centrifuge Training LLC talks about running a carbine whilst injured... "William Petty began his Law Enforcement career in 2003 in Albuquerque, NM. While there he served as a Firearms Instructor, an Emergency Response Team member and was also a member of the department’s shooting team.  In 2011, Petty relocated to Abu Dhabi, United Arab Emirates where he worked as a Counter Terrorism Instructor with the Critical National Infrastructure Authority. In 2013 (to present) he returned to the U.S. and resumed law enforcement with his department in Texas. While there he worked patrol and ran the firearms programs for several large regional Police academies. He has and continues to run contract courses establishing various programs and in-service material for major local, state and federal departments in the US and Canada."