Elsewhere in National news,Several people are dead and injured at a power plant in Connecticut that exploded this morning.Search and rescue crews are on the scene, clearing away the rubble and looking for survivors.CBS News Correspondent Janet Choi reports.(nats of ambulance)This was the sound many in Middletown, Connecticut say they expected to hear after an explosion rocked their community.too quick to super(MOS)14:18:37 "It felt as if something had hit my house."too quick to super(MOS)"Flet a large boom and then everything shook."Emergency officials say a large building in a natural-gas fired power plant exploded just after 11 am Sunday.(AP photo no excerptin)The 620 mega-watt facility is owned by Kleen Energy and was under construction. An estimated 50 construction workers were reportedly inside the building when the back wall was blown out...killing at least 5 workers and injuring at least 12.(14:13:25 "it's horrible)Paul Venti is also a construction worker and says he knows many of the dead and injured.:44 - :49(SOT: Paul Venti/Construction Worker)14:13:39 "We got some people up there that have got little kids at home, and we lost them.":50 - :57(Standup Bridge: Janet Choi/CBS News/Middletown, CT)"The power plant itself is fairly secluded...about a mile down this road and a mile from any homes. O fficials say the community was never in in any danger."Search and rescue crews plan to be on scene through Monday looking for victims in the rubble.1:03 - 1:08(SOT: Al Santostefano/Deputy Fire Marshall/Middletown, CT)14:25:46 "Similar to what you see on TV for the earthquake in Haiti. Same type of situation."Emergency officials say the at the time of the explosion, construction workers were purging the gas lines and performing tests. Investigators have ruled out terrorism, but they still want to know what caused the gas to ignite. Janet Choi, CBS News, Middletown, Connecticut.