This airport seems to have a strong connection to this type.
Flightaware.com show the last recorded fiight of N131JN from here to KCVS(Cannon AFB) on 27th June 2008.This airplane is now believed to be based in Singapore with a 'black' detachment.
Another PC-12/U-28 photographed here is N624TS,believed to be a recent addition to the 'black' det in Singapore.
Hi Le,there is a contractor at this field who works on several variants of special ops aircraft,they fit them with all kinds of goodies before going to the units,right now they have 5 Be 300,3 Do-328 and about 12 more PC-12s and a couple of M28-05.One be a good one for someone to watch if they have time.