At the Battle of Bunker Hill, the colonists used the physical geography of the area to their advantage by firing on the British from a relatively safe position on the "high ground" of the battlefield.
Bag check and shoe check and Having to go through a metal detector and being very precautious that it won't happen also the piolet locking the door so no one is able to get in
They are the first 10 amendments and the document helped protect an individuals rights and freedoms.