[SKYDRIFTER]

Bin Laden is not likely to hang around, being that close to the Pakistani border. Being realistic, if there's a large heli-pad, there's a helicopter or small plane capable of getting him to safety.

However, assuming this is a valid target, a bunch of high-volume pumps and pipes are needed. Build a reservoir system on top & do a high-pressure flush - appropriate term, besides.

At the peak of the flooding, have delayed charges detonate for a hydraulic over-pressure effect.

If the dam has a generator associated with it, throw a few mega-watts down the flooded tubes for good measure.

Repeat as necessary.

After the water exits, down hill, flood the lower drainage points with fuel & turn the tunnels into super-heated chimneys. Check the exit of the smoke / heat for missed entrances.

Repeat as necessary.

If it's necessary to enter the tunnels, have the locals take the point. Mulahs first.

Don't waste any 'friendly' lives or ammo; that's stupid.

Carpet-bomb the region to leave a lasting impression.

If any resistance is given from the local village, blow the dam.

[FITZ]

It's like when you go after moles who've dug tunnels all over your yard, you can get them out but it takes time.