When Wyatt enters the building to reconn Rittenhouse wearing a helmet cam, Christopher warns him of a threat "on your eight" which would be left and almost behind. Wyatt looks right (more like "2") and that's where the threat comes from.
At approximately 9:45 into this episode's soundtrack, Jiya (Claudia Doumit) asks Denise Christopher (Sakina Jaffrey), concerning instructions to Wyatt Logan (Matt Lantner), why she's not "sending in the calvary [sic]". In response, Denise answers, "I don't trust the calvary [sic]". The correct word, of course, is "cavalry". Although it's properly rendered in the English subtitles, it's just mispronounced. It's certainly easy enough to do given the similar spellings. But what, perhaps, makes it a little more interesting is that this slight error was made by both actresses and apparently not caught on-set. Calvary was the place outside Jerusalem where Jesus was said to have been crucified on Good Friday.
Robert Johnson walks out of the Gunter Hotel in San Antonio and is next seen, that same afternoon, walking, near the Louisiana border. The distance between San Antonio and Louisiana is 544 miles, approximately nine hours driving time doing 65 mph. And a lot longer if someone is walking.