Al Jazeera summarizes the day's events in Libya:

They link to new audio from the Voices of Feb 17 website; a Tripoli resident recounts crackdowns by security forces and "a city with an air of expectancy":

EA liveblogs:

1950 GMT: Back from a break to find that US warships, in Operation Odyssey Dawn, have launched Tomahawk cruise missiles on regime targets in Libya. There are reports of explosions in east Tripoli, where air defence systems have been targeted by the coalition. Houses 20 km (12 miles) away shook from the force of the explosions.

2005 GMT: Libyan State TV has reported the coalition attacks by saying civilian targets are being hit by "crusader enemies".

2010 GMT: The no-fly zone declared by the coalition covers Tripoli, Sabha, Natoura, Misurata, and Benghazi.

Al Jazeera recounts a recent Pentagon briefing:

10:12pm The Pentagon says that the UAE and Qatar will also be involved in military operations in Libya, but will announce their involvement themselves. ... Off the coast of Libya, there are: 11 vessels from Italy, 11 from the US (including three submarines, each with 100 missiles on board), one from the UK, one from France and one from Canada.