who opened fire at a florida nightclub. killing at least two people, wounding at least 20. what police say they are looking for next. >> also, will democrats go it alone and form a select committee to investigate the january 6th insurrection at the capitol? a democratic lawmaker calling for bipartisanship will join us live this hour. and you're looking at live pictures of arlington national cemetery this morning on this memorial day, as we all remember our fallen heroes. our barbara starr sits down with defense secretary lloyd austin, her exclusive interview ahead. stay with us.