1.   He would scrap the Anti-Ballistic Missile Treaty and permit defensive systems to guard against accidental firings or small-scale attacks by outlaw nations.

2.   Both proposals, for example, would require that guns be sold with safety locks to prevent use or accidental firing by a child.

3.   But firearms experts have said that safety devices on the double-action revolver prevent accidental firing.

4.   Norwood said trigger locks might even cause more accidents, even though several studies have shown that they can reduce accidental firings if properly used.

5.   When buying an electric staple gun, make sure it has a safety switch that locks the trigger and prevents accidental firing.

6.   An important aspect is establishing contact between the commanders of the opposing sides so that accidental firing does not turn into combat because of a lack of communication.

7.   It was not immediately clear whether the shots came from within the residence or from police outside, but an officer said it could have been an accidental firing.