Security at Ninoy Aquino International Airport (NAIA) is tight. Departures entail three levels of security screenings, one right at the entrance for bags. Later, hang on to your trousers as you drop your belts, bags, computers, shoes and inhibitions. Everything gets checked and you’ll be patted down courteously too. While several airlines insist on a 100ml-bottle perfume and liquids rule for cabin baggage, Manila Airport does not permit the carriage of any liquid in your carry-on. You'll need to place these items in your check-in baggage or run the risk of having it all confiscated. Most travellers to Manila will be well acquainted with the musty, concrete corridors of the International Airport. A newer and more modern facility, the Centennial Terminal is the exclusive domain of the flag carrier Philippine Airlines (PAL).  Arriving visitors are usually spared the tedious inspection reserved for outbound passengers. Customs checks are quick and, with just carry-on and a well-timed flight in, you could be from gate to taxi in ten to fifteen minutes. For the cheapest ride into town, exit the airport, cross the lane, and head down the stairs to the street level where the local taxis are parked. Be warned, it can be a scrum. The new Yellow Cab metered taxis that were introduced in March 2008 start with a 70 pesos flagfall and are a godsend.  A cab ride to the Makati commercial area where most of the exclusive Manila business hotels are located, will cost about P150-P200 (roughly US$1= P41) or so depending on traffic. There are coupon taxis too.