AfriCom will also provide military training to African countries and support the African Union's standby force.

WSJ: Into Africa

Some jet aircraft are based in nearby Kyrgyzstan, but another 500 US troops who have been assigned to the peacekeeping force will be on standby in Germany.

BBC: NEWS | South Asia | Nato seals Afghan expansion plan

Military jets and helicopters are also on standby around the capital, ready to respond to any threat, and new airspace restrictions came into force Saturday around London and the southeast.

CNN: UK faces security questions ahead of London Olympics

The force likely to be redeployed, mainly armoured infantrymen from the Black Watch regiment, is on standby to fight fires in the south.

ECONOMIST: British troops face fiercer fights in Iraq

Police said any important updates would be added to its force Twitter account and Devon County Council said it had more than 260 snow wardens "on standby" with local self help plans.

BBC: Traffic stuck in snow on Haldon Hill in January 2010.