First, you must have the Magic Hands for Sonic. You find them in the "City Escape" level by using the Fire Ring and Bounce attack on four metal boxes.If or when you do, go to the level, "City Escape," then find a S.W.A.T. BOT. Press the Y button until it says "Magic Hands" in the top-right corner, then press B. When you do, the S.W.A.T. BOT will explode and then appear inside of a little clear ball. Pick the ball up and find another S.W.A.T. BOT. Once you do, throw the balled up S.W.A.T. BOT at it. The S.W.A.T. BOT should shoot the ball and the ball will be sent back to you. After 6 or 7 throws, the balled up S.W.A.T. BOT should blow up and die.