What should I do if I attack the sentry and rob the duty weapon?

If I were a criminal, I would choose to shoot from an invisible place. When the sentry fell, I picked up his gun and put my homemade bomb at the door. When the pursuers in the barracks rush to the door to chase me, I will decisively detonate the bomb.

As for the restricted area upstairs, it is basically useless. When a sentry stands guard, it is impossible to look around, but his eyes are fixed on one place. For example, Chongqing 3. 19, gangsters attacked behind the sentry post, and the restricted area was useless. No fool will walk straight up to him with a brick. It is feasible to install a camera at the door. Moreover, it seems that all the city garrison sentries are standing in a glass cabinet now. Or there is a sentry box at the door.