Multiple witnesses saw a man they identified as Oswald shoot Tippit or flee the scene after emptying the bullet casings from his gun .
Markam testified that after an exchange of words , Tippit got out of his car and Oswald shot him four times .
Multiple witnesses saw a man they identified as Oswald shoot Tippit or flee the scene after emptying the bullet casings from Tippit 's gun .
Markam testified that after an exchange of words , Tippit got out of his car and Oswald shot him four times .