Because the Bad guys are shooting at the RESCUERS!!
Bad guys are shooting at rescuers because bad guys do not want to leave, nor be rescued. They like things like they are now, they own the city and have total access to everything, merchandise and mansions. In their drugged out little mushed out minds they see this a a God-send. You know, same as Allah be praised when New York was hit.
They cannot see past their nose regading the outcome, no food or electricity to plug in that plasma TV. They can't think that far ahead. They have been and always will be stupid (not ignorant) just stupid.