Large, External Transformation Sensitive - Glycoprotein - Also known as CSP - Cytochemistry
Large, External Transformation-Sensitive Fibronectin - Medicine (PALA)
Launch Equipment Test Set (MCD)
Law Enforcement Teletype - or Teletypewriter Service - Phoenix, AZ
Law Enforcement Teletypewriter System (SAUO)
Leading Edge Tracker System
Learning Experience for Technical Students - NASA
Linear-Energy Transfer Spectrometer - Radiology (KSC)
Linear-Energy Transfer System - Radiology
Live Environment Testing with SAGE (MCD)
Local Entertainment and Trade System (ODA)
Local Exchange Trading Scheme (WDAA)
Low-Energy Telescope System - Geophysics
Lunar Experiment Telemetry System - Aerospace
Letter Rulings