What does SIS stand for?
SIS stands for "Single Interceptor Satellite"
How to abbreviate "Single Interceptor Satellite"?
"Single Interceptor Satellite" can be abbreviated as SIS
What is the meaning of SIS abbreviation?
The meaning of SIS abbreviation is "Single Interceptor Satellite"
What does SIS mean?
SIS as abbreviation means "Single Interceptor Satellite"
