President Obama arrives Wednesday for the public event. The parents of accused gunman Jared Lee Loughner release a statement expressing grief and bewilderment.As Tucson scrambled to prepare for President Obama's scheduled appearance at a memorial service for the victims of the weekend's mass shooting, the parents of the alleged gunman, Jared Lee Loughner, offered their first public statement Tuesday, insisting that the attack left them as perplexed as anyone else.