Public Service Commission 
Packet Switching Capable 
Packet Switch Capable 
Point Source Catalog 
Personal Services Contractor 
Polar Stratospheric Clouds 
Primary Sclerosing Cholangitis 
Pittsburgh Supercomputing Center 
Product Service Codes 
Program Support Center 
Polar Science Center 
polar stratospheric cloud 
Political and Security Committee 
Product Service Center 
Permanent-Split Capacitor 
Personnel Service Center 
Platform Support Center 
Power System Communications 
Prime Service Contractor 
Program Safeguard Contractor 
Program Schedule Chart 
Project Steering Committee 
Packet-Switched Capable 
Parallel Switch Control 
Path Switching Count 
Payload Shipping Container 
Payload Steering Committee 
Peace and Security Council 
Performance Seeking Control 
Permanent Split Capacitor