The local Tucson TV reporter was saying that the lockdown was due to someone “who may or may not have had a weapon.” Sometimes they need to think before they speak. Why would there be a problem with someone who may NOT have had a weapon?
Depends on where they were on base. There’s all kinds of cool stuff on that base for bad guys to get a hold of. Secret stuff, dangerous stuff, secret dangerous stuff. Back when I was a kid (late 70s early 80s) DM went under lock down almost once a month, the two big causes were: someone who looked unauthorized in an authorized personnel only area, somebody trying to gain access by force/ stealth (rush a gate or climb the fence).
Back then it didn’t generally make the news. If your life involved DM you found out, if it didn’t you didn’t. They probably still have tons of lock downs that don’t make the news).
Finding only the threat is being classified as unspecified. Continuing to search for information.