A personal descent system (200, 900) comprising: a descent lifeline (202, 902); a support structure coupling assembly (100, 800) including, a main connection member (106, 906) including a latch arm mounting aperture (111,911), the descent lifeline coupled to the main connection member, and a D-ring (102, 802) coupled to the main connection member; and a control descent device (140, 840) including, a housing (141, 841), the housing configured and arranged to be coupled to a safety harness donned by a user, a latch arm (142, 842) pivotally coupled to the housing, the latch arm selectively received within the latch arm mounting aperture of the main connection member to selectively couple the support structure coupling assembly to the control descent device, a brake assembly (300, 861) received within the housing, the brake assembly engaged with the descent lifeline to control a payout of the descent lifeline, and a deployment system (250, 950) configured and arranged to selectively release the latch arm to allow the latch arm to pivot in relation to the housing therein causing the latch arm to be removed from the latch arm mounting aperture of the main connection member and comprising an elongated portion (250b, 950b), a portion of the elongated portion being received within a deployment passage (256, 740) within the housing; a lock pin (252, 1252) coupled to an end of the elongated portion, the lock pin selectively received with a lock aperture (143, 842a) of the latch arm to selectively lock the latch arm in a static position in relation to the housing; and a biasing member (254, 1254) received within the deployment passage of the housing, the biasing member positioned to assert a biasing force on the lock pin into the lock aperture of the latch arm. a descent lifeline (202, 902); a support structure coupling assembly (100, 800) including, a main connection member (106, 906) including a latch arm mounting aperture (111,911), the descent lifeline coupled to the main connection member, and a D-ring (102, 802) coupled to the main connection member; and a control descent device (140, 840) including, a housing (141, 841), the housing configured and arranged to be coupled to a safety harness donned by a user, a latch arm (142, 842) pivotally coupled to the housing, the latch arm selectively received within the latch arm mounting aperture of the main connection member to selectively couple the support structure coupling assembly to the control descent device, a brake assembly (300, 861) received within the housing, the brake assembly engaged with the descent lifeline to control a payout of the descent lifeline, and a deployment system (250, 950) configured and arranged to selectively release the latch arm to allow the latch arm to pivot in relation to the housing therein causing the latch arm to be removed from the latch arm mounting aperture of the main connection member and comprising an elongated portion (250b, 950b), a portion of the elongated portion being received within a deployment passage (256, 740) within the housing; a lock pin (252, 1252) coupled to an end of the elongated portion, the lock pin selectively received with a lock aperture (143, 842a) of the latch arm to selectively lock the latch arm in a static position in relation to the housing; and a biasing member (254, 1254) received within the deployment passage of the housing, the biasing member positioned to assert a biasing force on the lock pin into the lock aperture of the latch arm. a housing (141, 841), the housing configured and arranged to be coupled to a safety harness donned by a user, a latch arm (142, 842) pivotally coupled to the housing, the latch arm selectively received within the latch arm mounting aperture of the main connection member to selectively couple the support structure coupling assembly to the control descent device, a brake assembly (300, 861) received within the housing, the brake assembly engaged with the descent lifeline to control a payout of the descent lifeline, and a deployment system (250, 950) configured and arranged to selectively release the latch arm to allow the latch arm to pivot in relation to the housing therein causing the latch arm to be removed from the latch arm mounting aperture of the main connection member and comprising an elongated portion (250b, 950b), a portion of the elongated portion being received within a deployment passage (256, 740) within the housing; a lock pin (252, 1252) coupled to an end of the elongated portion, the lock pin selectively received with a lock aperture (143, 842a) of the latch arm to selectively lock the latch arm in a static position in relation to the housing; and a biasing member (254, 1254) received within the deployment passage of the housing, the biasing member positioned to assert a biasing force on the lock pin into the lock aperture of the latch arm. an elongated portion (250b, 950b), a portion of the elongated portion being received within a deployment passage (256, 740) within the housing; a lock pin (252, 1252) coupled to an end of the elongated portion, the lock pin selectively received with a lock aperture (143, 842a) of the latch arm to selectively lock the latch arm in a static position in relation to the housing; and a biasing member (254, 1254) received within the deployment passage of the housing, the biasing member positioned to assert a biasing force on the lock pin into the lock aperture of the latch arm.