police A2, retelling the story

Last Friday after work I was planning to visit the bank to open a new savings account. As soon as I arrived at the bank, I joined the queue and waited for my turn to address the bank manager. Suddenly, two men in black masks on their heads burst through the entrance door and rushed to the cashier, waving their guns around. They were shouting loudly pushing everyone to lie on the floor. Before we realised what had happened, one of the bravest men had forced the other bank manager to press the security button and called the police. After a while we heard the police car siren blaring. When the robbers heard the siren, they tried to escape from the bank. By the time the police arrived, the criminals had already gone. We were safe but were still lying on the floor with our faces down. Eventually, the police chased the robbers and caught them.