Spot the Not #80 - sound as a weapon

All of the following statements are true except one. Can you Spot the Not?

1. The US used rock 'n roll to pester Noriega while took refuge in the Vatican embassy.

2. The Israeli Davidka mortar made a terrifying shriek and an explosion so loud the Arabs first thought they were atomic weapons.

3. During the battle of Stalingrad, the Russians had loudspeakers play the sound of a metronome along with the message "every 7 seconds, another German soldier dies."

4. During WWI, The British sent many bagpipe players into battle against the Turks, as the music tended to frighten them more.

5. During the Vietnam War, Operation Wandering Soul used loudspeakers to broadcast spooky noises and the voice of a Vietcong "ghost".

6. During WW2, a German dive bomber was equipped with "Jericho trumpets" which made a terrifying shriek when the plane went into a dive.