Since I'm going to be traveling and probably pretty busy, here's the comic a day early!
This strip posed a choice between aesthetics and accuracy. In reality, NFL teams do not practice in their home stadiums--they have big practice facilities located somewhere else. But aesthetically, the practice facility is dull to look at and unrecognizable to anyone. There are no giant walls to scale or anything fun like that.
In the end, I chose to ignore accuracy this time and go with the more interesting setting.