Originally Posted by
UncleDude
Try a Domestic-International connection at ATL. 2 Security Checks and a 20 Minute Bus Ride through the Suburbs of Atanta.
That is a function of architecture, not security requirements.
The same connection at IAD does not require any additional checkpoint. One is screened by TSA at the domestic origin, deplanes from the domestic origin at IAD, proceeds to the international departure gate unimpeded and boards the international flight without any additional screening unless there is either a specialized circumstance.
Other D-I connections in the US are the same unless the intra-terminal architecture is such that one must leave the sterile area.