The U.S. Space & Rocket Center noted this morning that, just before 10am CDT, “3 shots were fired into the Davidson Center, Saturn 5 hall.”

Fortunately–and most importantly–no one was injured.

Update: has the story now.

Update 2: WHNT has video online.

Update 3: Over at CollectSpace, Robert has a very thorough article about today’s excitement.  What a day!