Prevention is better than cure and this idiom applies not only to the health arena, but to all aspects of life including the hijacking aspect of aviation. The best thing is to not allow possible hijackers to board any aeroplane. Keeping this in mind, the security measures have been beefed up in most countries across the globe especially after the 9/11 incident. Matching of baggage against the passengers, thorough checking of all hand baggage units, not allowing any sharp metallic object inside and using hi-tech instruments to verify visas and electronic surveillance are some of the stringent measures that have been adopted in this regard.
Apart from these measures, the security agencies also organize mock security drills wherein an actual hijack is simulated and the security personnel are supposed to deal with the situation with minimum possible loss of life and property. Figure 1 shows one such drill in progress at an airport. Of course things have certain becoming more difficult with the emergence of the trends of suicide bombings which makes deterrence by fear very ineffective agents against the hijackers.
In the end it must also be remembered that apart from the duties of the security personnel, we as normal citizen also need to be alert and vigilant about an untoward observations or happenings so that any possible breach of security could be brought to light immediately thus preventing any catastrophic event such as that occurred in September 2001.