I like to break things down into small bites...
How are they getting into the Tir? By land? By Air? By Sea?
Each of those face their own unique issues. By land they have a boarder wall, check points, sensors, armed guards and roving patrols and wildlife to contend with.
If by Air, they have sensors, drones, spirits, and air craft (possibly) to deal with, along with landing said aircraft (or a skydive entry?)
If by Sea, then they have the coast guard, boarder patrols, wildlife, and environmental hazards...
Or, maybe they just book a bus trip? (They do happen you know..), which case they have to deal with getting the equipment, and Kit on the Tir side. (NO, the Sammy can not bring his Ares Stoner with on mass transit, even if he checks it in luggage!)
Once over the boarder, how are they getting to SLC?
Depending on their way in, they have hundreds of kilometers to cover. Hundreds of kilometers through either back road driving, or highway driving. One might be faster tehn the other, but both have their dangers. From angry wildlife, to angry go-gangers, to just angry people...
Then there is the Tir itself...
The Tir is a caste system that places the Elves of Tir above everyone else, and meta-humans at the very bottom. (Granted, they have "improved" a little in the 2070s, but its very much a racially divided area). If the group contains meta-humans, then that is just one more layer to deal with... ("Walking while Tusked" is a cause for concern don't you know..)
Fashion and style are different on the Tir as well, and while not a huge issue, just draws attention to yourself.
Once at SLC, they have to penetrate Deseret. What is the security there? Who works on the project? Who has access to the area?
How big is it? how easy is it to care for? (can the runner jam it in a pocket, or do they need a special container to keep it safe?)
Finally, How are they getting to the drop point? Is it a small object and thus they can just walk across a boarder no problem? Is it a huge item that a requires a shipping container?
The Devil is in the little details...
Of course, any Fixer worth his salt is going to have some of this planned out for the team ahead of time... (IS he worth his salt?)