As we've said previously, we are also providing intelligence support.

WHITEHOUSE: Press Briefing

Coalition forces have been providing air support and intelligence, but the offensive is the first real test of the Iraqi security services.

NPR: Clashes with Militants Test Iraqi Security Forces

Yet even so, the Libyan operation would have been impossible without US involvement - both in actively bombing Colonel Gaddafi's air defences during the early days of the offensive, and in providing extensive intelligence and other support later.

BBC: Cameron faces sceptics with 'new interventionism' call

The Border Patrol would remain responsible for catching and detaining illegal immigrants, with National Guard troops providing intelligence gathering, surveillance and other administrative support.

NPR: Bush Calls for Troops, Funds to Secure Border

The United States has also stepped up its involvement in the conflict by conducting aerial refueling missions on top of the intelligence and airlift support it was already providing.

CNN: STORY HIGHLIGHTS

Officials described America's longer-term role as providing logistical support, such as refueling allied planes and provide intelligence from drones.

WSJ: Libyan Raids Show Obama Doctrine in Action