Abstract: In certain embodiments, a system includes a security barrier attached to a structure such that the security barrier is operable to move from a first position, in which the security barrier blocks an exterior opening of the structure, to a second position, in which the security barrier does not block the exterior opening of the structure. The system further includes a latch mechanism operable to control movement of the security barrier from the first position to the second position and a sensor operable to generate an emergency signal indicating an emergency condition within the structure. The system further includes a control unit operable to access the emergency signal generated by the sensor and generate, in response to the emergency signal, a release signal to be communicated to the latch mechanism. The release signal is operable to cause the latch mechanism to permit the security barrier to move from the first position to the second position.

Abstract: In certain embodiments, a system includes a security barrier attached to a structure such that the security barrier is operable to move from a first position, in which the security barrier blocks an exterior opening of the structure, to a second position, in which the security barrier does not block the exterior opening of the structure. The system further includes a latch mechanism operable to control movement of the security barrier from the first position to the second position and a sensor operable to generate an emergency signal indicating an emergency condition within the structure. The system further includes a control unit operable to access the emergency signal generated by the sensor and generate, in response to the emergency signal, a release signal to be communicated to the latch mechanism. The release signal is operable to cause the latch mechanism to permit the security barrier to move from the first position to the second position.