The Boeing YAL-1 Airborne Laser Testbed (formerly Airborne Laser) weapons system is a megawatt-class chemical oxygen iodine laser (COIL) mounted inside a modified Boeing 747-400F. The heart of the system is the COIL, comprising six interconnected modules, each as large as an SUV. Each module weighs about 6,500 pounds (3,000 kg). When fired, the laser produces enough energy in a five-second burst to power a typical American household for more than an hour. If the ABL achieves its design goals, it could destroy liquid-fueled ICBMs up to 600 km away. Tougher solid-fueled ICBM destruction range would likely be limited to 300 km, too short to be useful in many scenarios The reality is that you would need a laser something like 20 to 30 times more powerful than the chemical laser in the plane right now to be able to get any distance from the launch site to fire." Boeing YAL-1 - Wikipedia, the free encyclopedia I have contemplating this for some time that the constraints of this particular program doesn't affect India, not in the least in terms of Pak centric missile defence. If Yal-1 could be considered as a template, then a rail mobile system should effectively have increased range and intensity since the weight constraints do not apply as much yet will have sufficient mobility and much longer endurance. KALI program of DRDO is too immature and technologically backward. So can it done? @Twinblade, @p2prada and others.