Palletized Load System 
Palletized Loading System 
Personnel Launch System 
Primary Landing Site 
Please 
Post Landing and Safing 
Programmable Logic Sequencer 
Propellant Loading System 
pleasurecraft 
Primary Link Station 
Palomar-Leiden Survey 
Partial Least Squares 
Personal Library Systems 
Personnel Locator System 
Physical Layer Signaling 
Preliminary Landing Site 
primary lateral sclerosis 
personal locator system 
Physical Layer Signalling 
pillars of logistic support 
Plasma Science 
Plasma Subsystem 
Portable Launching System 
precision location system 
Premises Lightwave System 
Professional Land Surveyor 
Pure Live Seed 
IATA code for Providenciales Internati… 
Pacific Laser Systems 
Papillon Lefevre syndrome