INDIAN jawans who've endured subzero Siachen owe it to two obscure organisations for their sanguine fitness. The Defence Food Research Laboratory (DFRL), Mysore, which helps them cook steaming hot sabzidal in two minutes, make rotis that last six months. And the Defence Bio-Engineering and Electro-medical Laboratory (DEBEL), Bangalore, which supplies battle fatigues to hold frostbite and hi-altitude sickness at bay. Neither has anything to do with nuclear bombs or missiles.