With personal you can negotiate a early termination of lease fee that encompasses ( legal fees, some lost rent for expected down time to re-lease, new tenant TI's, and leasing commissions).If tenant was corporate credit rated and possibly investment grade then with 10 year lease with heavy TI chances are high you get it back.

In your daily commute or down time be sure to start listening to all of the podcasts.

I also do not worry about vacancies since vacancies are built into my expenses and I have honed the tenant search to the point where I can usually replace tenants with little to no down time. 

Hopefully you can find someone who either has a creative way of making the city happy or is looking to fill down time.  

Military service is demanding even in the down time. 

Sounds like there would need to be some repairs so if they do decide to move, you would have some down time and lost rent as well as the repairs to bring it back up to rent ready. 

What about a week downtime here or there between jobs or while you’re waiting for permits, etc.

What I did during my down time was 1) Obtain real estate license ( it does have some cost so be aware) 2) I actually started attending my local REI group to network and begin building connections 3) I made friends/mentor with a guy who was in the business of flips and I spent a lot of time with him at his properties learning the construction side of the business and learned how to effectively price and plan for renovations. 4) I dedicated myself to working a part time gig in the real estate business.

Would love to use my current downtime instead of putting myself through that again.  

Someone that's done the job enough already knows to have the right tools and parts handy in their truck so it minimizes "down time".