The RQ-170 Sentinel was the type of stealth drone used to conduct surveillance on the compound used by Osama bin Laden in Abbottabad, Pakistan, before the May raid by Navy SEAL commandos that killed the al Qaeda leader.

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The RQ-170 Sentinel is an advanced high-altitude surveillance drone used by both the US Air Force and the CIA. It does not carry weapons.

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Evan Woodbery, a writer for the Knoxville News Sentinel was at the field and managed to document the drone documenting practice.

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