These are well trained terrorists. I am sure you have studied the operation they launched against Mumbai. And they have these things written down in manuals. When you join LET, you first go for a basic course (a few weeks) learning to shoot and stuff. Then some go on to more advanced courses. They keep diaries, they get homework. They are highly motivated. I am not surprised at the level of coordination. But all of this requires safe houses and training centers. Unless the army decides to go after those, there is no way you can protect every possible target. There are literally thousands of targets.