31.   The invention soon proved vital to the Allied war effort in designing aircraft, gun barrels and other machinery of destruction.

32.   Three men and a woman are looking down the gun barrel of middle age.

33.   We are a generation of settlers, and without a helmet or a gun barrel we shall not be able to plant a tree or build a house.

34.   When the gunman turned to look at another student, McEnaney saw an opening and grabbed the gun barrel, pushing it down toward the floor, Connors said.

35.   When she yelled back, a British soldier stuck a gun barrel in her stomach and told her to leave.

36.   Although quiet on Sunday, tensions remained high at the airport, where both troops eyed each other through gun barrels from hastily dug trenches.

37.   Although quiet, tensions remained high Sunday at the airport, where both troops eyed each other through gun barrels from hastily dug trenches.

38.   Although quiet, the airport remained tense on Sunday, with troops from both sides eying each other warily through gun barrels from hastily dug trenches.

39.   Detainees recounted being awaken at night with a gun barrel in their back and pulled out of bed by their hair.

40.   Edin met Igor across their gun barrels on the Dobrinja line, one of the nastiest stretches of Bosnian battleground.