worshippers clinging to their faith as we learn more about a gunman and what may have motivated him. i m brianna keilar in for zoraida sambolin. i m john berman. new details about the deadly shooting spree. seven people dead including the gunman. this morning we may have a motive for this massacre. the temple leader who was shot when he tried to tackle the gunman and save others. law enforcement officials spent the night examining the suspected gunman s home. we don t have his identity yet. a source tells cnn the suspect was an army veteran who may have been a white supremacist. police say the shooter walked into the temple parking lot yesterday morning and began firing. the first officer responded to the scene was ambushed. here is what it sounded like on the police dispatch. subject down! we have one officer shot. david mattingly with live in oak creek. we ve heard the gunman described as a 40ish old white male and we keep hearing about this tattoo commemorating sep