Frisking an ex-President of India on the grounds that “As per policy we frisk everyone regardless of stature” is a stupid waste of time. It is exceedingly unlikely that Kalam is a terrorist and is carrying a bomb, and if you can save some time and bother by exempting a small category of people from security checks, it gives you a little more time to frisk more likely targets more thoroughly.
Unfortunately, this stupid policy is the only sensible response to a culture where people start expecting to be exempt on the basis of rank. While it is highly unlikely that Kalam is a terrorist, when sitting MPs, MLAs, etc. start demanding to be exempt from frisking on the basis of their ranks, the probability that one of them will either deliberately or inadvertantly end up carrying an explosive device to a plane goes up.