Britain was the first Army to develop and use tanks in WWI.
Is this a personal question or a school question?
active shooter events are often over in 10 to 15 minutes In police training manuals, the police response to an active shooter scenario is different from hostage rescue and barricaded suspect situations.[3][4] Police officers responding to an armed barricaded suspect often deploy with the intention of containing the suspect within a perimeter, gaining information about the situation,
Explanation:
