Unless its different from the ham bands, licensed business users are the primary users and other licensees are secondary and must yield. UPS is licensed on a chunk of 1.25m in the ham spectrum, but it turns out they decided not to actually use it. If, when and where UPS decides to use it, hams are secondary and have to let UPS do as they wish on the business licensed part of the band.
You can look it up, but I have found it a bit tedious