Maryland taxes- Tax-free state resident, MD company, nationwide on-site work??

I work for a small business incorporated in Maryland. I've moved to a tax-free state. I fly into Maryland to pick up company equipment and then I either drive or fly with it to a location to perform my work- typically for a few days- and then bring it back to Maryland and fly home. The work can take place in any state, or even in other countries.

What's the expectation for Maryland income taxes? Do I need to track the hours I spent working in Maryland, either travelling through it to go elsewhere, or the occasional job within the state? On a typical job, after I pick up the equipment, I'm across the state line within 2 hours, so I don't spend much time there working, probably less than 10 hours per month (unless I have a local job and then it's a few days).

If it matters, I also own rental property in MD, so I have to do a return. Just wondering how my W2 job is handled.