FIRST LOOK: Wave of violence strikes police officers

Welcome to First Look, our daily roundup of early-bird news:

• Military investigators have been unable to link Private Bradley Manning with WikiLeaks founder Julian Assange. (MSNBC)

• Justice Scalia under fire for delivering speech to tea party group. (LA Times)

• In many states, Medicaid is expanding access to birth control. (Politico)

• An unusual wave of violence has left 10 police officers dead since the New Year. (NYT)

• So far, Air Force drone surveillance gadget is an expensive failure so far. (Washington Post)

• Four Columbus, Ohio schools were closed today due to a gas leak. (Channel 10 News)

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