What does it mean when someone flashes their lights at you?

During the course of a raid, communication between swat team members suffered as excessive static overwhelmed radios. within the communication process, this static can be viewed as it interfered with the communication.

Alexander stephens’ opinion on secession and compromise led to what being written? a)the kansas-nebraska act b)the missouri compromise c)the u.s. constitution d)the georgia platform

In 1917 ww1 started to happen, and america tried to stay neutral but couldn't. what are the two main reasons america didn't stay neutral during ww1