The concern was that bin Laden would oppose any type of capture operation.

WHITEHOUSE: Press Briefing

But we are right now less than 24 hours after this operation, so we are talking with the Pakistanis on a regular basis now, and we're going to pursue all leads to find out exactly what type of support system and benefactors that bin Laden might have had.

WHITEHOUSE: Press Briefing

Mr Whyte said the type of firefighting vehicle planned for Windsor would typically only deal with bin and grass fires.

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This means the robot can distinguish the type of waste based on its colour and drop it into the appropriate bin.

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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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