MCRP 12-10B.1, page 220

FORWARD SECURITY POINT PERSON FLANK SECURITY COVER PERSON OVERLAPPING SECTORS OF FIRE COVER WINDOWS, DOORS, ALLEYS, ETC., FROM GROUND LEVEL TO UPPER FLOORS. STREET FLANK SECURITY WEAPONS AT TACTICAL ALERT, OR READY CARRY. (BASED ON SAFETY AND ENEMY CONTACT) ALLEY REAR SECURITY 3RD FIRE TEAM 1ST FIRE TEAM 2ND FIRE TEAM BUILDING Figure A-69. Advancing/Patrolling Along an Urban Street (Fire Team, Double Column) (b) Rear Security. The last two Marines in the squad of each column are responsible for the rear security of each of their formations. They will move in bounds in order to allow a Marine to always provide active security to the squad’s rear (Figures A-70 and A-71). Two methods of bounding may be used: alternate or successive bounding. 1 Alternate Bounding. In this method, the two rear-security Marines alternate being the last Marine in the squad. The last Marine in the formation will have his/ her weapon at the ready and will be in the kneeling position along the wall of the building. The second to last Marine will move in trace of the unit until he/ she has moved approximately 10 to 15 meters. At this point, he/she will step out one pace from the wall. He/She will then assume a good kneeling firing position and announce, “SET.” The last Marine will rise from his/her position, turn around, and move next to the wall to catch up with the column. It is Military Operations on Urbanized Terrain A - 59