Tomlinson when speaking of the various levels that the elevators service mentions the Ground Floor which required clarification from Specter during his questioning.
Why in the hospital would the Ground floor not be referred to as the first floor? In the TSBD all references to the Ground floor say First floor. Are hospitals different? Was this maybe something particular to Tomlinson?
It's got no bearing on the case but I'm interested to know if there's a convention for naming floors in the USA. Where I live right across the country we say Ground Floor.