Another good source of images is the CG's media website (http://cgvi.uscg.mil/media/main.php). If you search for "MH-65C" and then go to page 5, you'll find some in-cabin shots of the Barrett in use.
Note, the MH-65C designation is not used exclusively for the HITRON AUF birds. The multi-mission designation is also used in the context of the MCH program, and it appears that the entire fleet will initially be redesignated MH-65D after undergoing a digital AFCS/cockpit upgrade.
Note also, the HITRON aircraft are not the only AUF Dolphins in operation. The type also performs the National Capita