Research specific jobs, job titles, and other categories or clusters work that are as similar as possible to your current job, just in other organizations.
Look for job listings that have "travel" in the job description.
The point being, stick with what you love and get well paid for. Somewhere, there are employers who need someone to do exactly what you are looking for. No career change needed, just research. Use LinkedIn, personal networking, etc persistently. Communicate with people on multiple channels until you find examples of the right thing. Then find all the instances of each example! You'll find one that's open and pining for someone like you.
If you need step by step research directions, fall back on What Color is Your Parachute. Or Google "how to do informational interviews", make a checklist, use that as your question guide when contacting people and researching positions.
PS. I have a relative who hates his job because he "doesn't want to set foot on one more military base." He tests and upgrades network security for military installations, but as a civilian contractor. If you can pass background checks and communicate via the military's organizational protocols, you could include such contractors in your search. He goes to new sites every month or two, usually a couple weeks at a time, for the field portion of their work.
Also - if you don't mind writing reports at the end of a visit, you could become an IT auditor. Get CISA certified; audit a new org or system every few months. Money might be close to what you're used to. I doubt you need to go that far afield to get what you want, but with your skills, they'd love you. Normally an auditor should be good at interviewing people, and analyzing business risks as well as IT ones, but with your background, other team members could do that while you focused on the IT part.