men such as : staff sergeant william jesse james ; sergeant first class charles 'doc mayo ' hellmans ; sergeant first class thomas bonnie clyde ; sergeant first class thaddeus 'teach ' collins ; sergeant first class jim bo 'tex ' de luca ; and five daniel boone arvn scouts now only three : sergeant first class robert scarburg , sr , captain robert scarburg , jr and dr. spurgeon loo kim remained alive to complete the mission .