Police used "flash-bangs, " devices meant to stun people with a loud noise, and negotiated with Tsarnaev for about half an hour.

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Police used "flash-bangs, " devices meant to stun people with a loud noise, and started 20 to 30 minutes of negotiation with Tsarnaev.

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In fact, when technicians go to fire off the breaker, they alert their colleagues with the warning, "Making a loud noise!"

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There's never more than a 15-minute break before you hear the loud jet noise overhead with airplanes going to Iraq.

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