By the way, I would like to teach the PNP SWAT a little mechanical tactics related to the recent hostage taking assault. You don't use a sledge hammer to break a tempered glass, especially if the glass is over-head because sledge hammer use the force of gravity (downward force using its own weight) to crash objects you strike. In construction engineering, it is a HAZARD to use a sledge hammer to crush objects above you. To break a tempered glass, you just use an ordinary "pointed hammer" or you can also use a hand-gun mounted glass breaker like this one in the picture above that I found at http://www.thefirearmblog.com/blog/2009/02/08/glock-mounted-glass-breaker/.
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If you want to force open a car door or a bus door, you use iron-hook and welded chain or cable to pull it away using a truck or an armored van. Don't use an ordinary rope.
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Don't use the truncheon riot shield as a portable stair because it is slippery even if it is not wet.
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See also this is a 3:32 minutes assault footage. Look at 1:08-1:13 notice the third cop from left carelessly pointed the muzzle of his handgun on the cop in front of him. http://www.youtube.com/watch?v=rRt1aNsNM0c
