Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I've seen in this thread:

|Fewer Letters|More Letters| |-------|---------|---| |DoD|US Department of Defense| |KSC|Kennedy Space Center, Florida| |SLS|Space Launch System heavy-lift| |SRB|Solid Rocket Booster| |STS|Space Transportation System (Shuttle)|

^(5 acronyms in this thread; )^(the most compressed thread commented on today)^( has 19 acronyms.)
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