Private 1st Class Christian Cochola and Pfc. Rojas Esgar, combat camera specialist in Marine Corps Combat Development Command (MCCDC), load blacktip 5.56 ammunition. Marines had the opportunity to fire an M27, M249 SAW, and M9 and M45 service pistols. - Private 1st Class Christian Cochola and Pfc. Rojas Esgar, combat camera specialist in Marine Corps Combat Development Command (MCCDC), load blacktip 5.56 ammunition. Marines had the opportunity to fire an M27, M249 SAW, and M9 and M45 service pistols.