This has the makings of another potential paramilitary drug raid legal drama:

An FBI agent was killed early yesterday near Pittsburgh during a raid on the home of a suspected cocaine dealer, who was taken into custody along with his wife. Federal officials later reported that the woman was being charged with the shooting.
…
A lawyer for the couple said Christina Korbe faces homicide charges in connection with Hicks's death, three Pittsburgh television stations reported. Station KDKA quoted lawyer Sumner Parker as saying the Korbes may have believed they were the victims of a home invasion. Federal officials said Christina Korbe was being held by state authorities in connection with the killing.

As he was led away in handcuffs from the Allegheny County police headquarters yesterday, Robert Korbe blamed the shooting on other law enforcement officers.

"They shot their own guy," he told reporters. "I didn't shoot him." [Washington Post]

We just don’t have enough facts at this point, but if this turns out to be another case of a confused suspect mistaking police for burglars (or police shooting each other), then it’s something we’ll be discussing in more detail very soon.
 
Whether it’s a police officer or a suspect, it’s just tragic that so many lives continue to be lost during aggressive drug raids. I agree with Radley Balko who asks why Robert Korbe couldn’t have been arrested outside the home. Busting into people’s houses at 6:00 in the morning is a prescription for disaster. If police can’t find a safer way to do these raids, they need to look harder.