21.   Even with attack helicopters flying in support, the columns were decimated.

22.   Fighter jets and attack helicopters will patrol the area, prepared to intercept an unauthorized aircraft.

23.   Guam served U.S. security interests again throughout the Cold War, when steely Stratofortress bombers, Starlifter cargo planes and Navy attack helicopters stood guard against the Soviet threat.

24.   Heavily-armed NATO ground forces and attack helicopters are to patrol the zone to insure compliance.

25.   In response, Israel has threatened to use attack helicopters and tanks.

26.   In the Gaza Strip, Israeli attack helicopters fired anti-tank missiles at Palestinian positions, the first time helicopters had fired in the clashes.

27.   Israel has shown interest in acquiring a wide array of advanced weaponry, attack helicopters, cruise missiles and other high-tech gear.

28.   Israeli attack helicopters fired dozens of air-to-surface guided missiles in a raid that lasted two hours and plunged Gaza City into darkness.

29.   Israeli attack helicopters rocketed a factory in the Gaza Strip, which the army claimed was used by the Palestinian forces to manufacture mortars.

30.   Israeli attack helicopters hovered overhead, but did not fire.

n. + helicopter >>共 162
police 22.54%
army 17.73%
attack 15.43%
rescue 11.29%
news 3.89%
government 3.80%
transport 3.41%
search 1.63%
television 1.44%
evacuation 1.15%
attack + n. >>共 345
helicopter 19.50%
ad 9.54%
came 5.53%
dog 5.47%
submarine 4.37%
mode 2.67%
aircraft 2.49%
jet 2.31%
victim 1.94%
site 1.82%
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