User blog comment:Zealot Guy/Useful tricks and tips for Battlefield 3/@comment-24476373-20120214231618

How do you blow up enemy explosives with C4 'safely' (Other than by setting a pack next to the explosive and blowing it)? Do you aim at it with the crosshairs for the clapper?

Also, I think you have it wrong for the color of the lock warning. Yellow indicates heatseekers/Stingers, while Red indicates a laser lock.