If you find what could be a bomb there are many things you can do to minimize the danger. The first thing to do is don’t touch it. If you are not certain something is a bomb, but you think it could be a bomb, and then treat it as a bomb. Don’t use your radio or your cell phone near the suspected device. Some bombs are set off by radio waves. Use a land line phone to call for more help.
You need to evacuate a reasonable distance. Keep calm and keep others calm, a crowd running from a bomb could trample people. Survey the whole scene. If the bomb goes off what may happen? If the bomb is in the middle of a parking lot the bomb is probably your only worry. If the bomb is under a bridge or in a building, then you may need to evacuate the building and stop traffic over the bridge. Don’t try and move the bomb outside, some bombs are detonated when they are disturbed.
Some bombers use clusters of bombs. They leave a secondary bomb to kill first responders after the first bomb is detonated. Set up a location for responders to go to where they can prepare to move to the bomb location, but check that second location to insure there is no bomb there. Handling bombs is a job for experts, but there is a lot you can do before they arrive; that’s what the SGT Says.