Why does it seem like American soil is becoming alarmingly more dangerous for servicemembers?

Sensationalist media that focuses on fear mongering...

We need to stop treating America like its any safer then being anywhere else. I don't advertise my service, I don't wear my uniform in public. When I leave my house, I'm carrying a firearm and a knife. When I leave the local town I have a rifle with me.
In the Case of Staff Sergeant Select Stone (can't believe I just typed that) he was in the wrong place at the wrong time. Their are parts of town you don't go into, when you violate that you get into trouble. He is very lucky to be alive. I don't think he was targeted.

A1C Stone looks like he was somewhere he ought not be, and was an active player in that fracas. He should have had a wingman, too.
I don't think he was targeted for being military. Looks like a typical late-night gong show that happens near closing time pretty much everywhere.
I'm sure his Chain-of-Command will have input for him when he recovers.
Thankfully, it looks like he will be OK.