A TV interview with former Arizona Rep. Gabrielle Giffords and her husband will air on the second anniversary of the Tucson shooting rampage that killed six people and wounded Giffords and 12 others.

ABC says Giffords and retired astronaut Mark Kelly will speak during the interview about a new initiative they're launching. The network didn't specify what the initiative would aim to do.

A call to a Giffords spokeswoman wasn't immediately returned Sunday.

The interview by anchor Diane Sawyer will air at 4:30 p.m. MST Tuesday.

Giffords has given only one interview since the Jan. 8, 2011 shooting, and that was with Sawyer a few months after in what then was her and Kelly's suburban Houston home. Giffords' comments in that interview were brief.

Her mobility and speech were limited by a bullet wound through her brain.

Giffords and Kelly met Friday with the families of victims in last month's shooting in Connecticut that left 26 people dead inside an elementary school.

The couple met earlier in the week with New York Mayor Michael Bloomberg, a longtime gun control advocate.

Giffords was conducting a "Congress on Your Corner" event, meeting with constituents, when a man opened fire, shooting her through the head, killing six others and wounding another dozen, including Ron Barber, who at the time was Giffords' district office manager and now is congressman from her old district.

Jared Loughner was subdued by bystanders and arrested at the scene. He was declared mentally incompetent after a diagnosis of schizophrenia, and later pleaded guilty in federal court after being found competent. He was sentenced in November to life in prison.