Factual error: Both shuttles are approaching the Russian space station with their main engines on, without atmosphere that would not be needed.
Visible crew/equipment: There is a reflection of the cameraman & crane in fume in the outside shot while A.J. and Lev discuss controls of the Armadillo, before they reach the canyon.
Other mistake: Adding on to the idea of the shuttles flying too close together, at a couple points the ejected shuttles from one booster appear to fly directly into the flight path of the tailing shuttle. While is certainly possible the second shuttle could maneuver to avoid the collision, it further demonstrates the absurdities of launching the two craft in such close proximity.
Revealing mistake: When it shows the first shuttle docking with the Russian space station, you can see the word "Force" on the side of the shuttle. When the second shuttle docks, its a reverse of the same footage, because now you can see the word "Force" is backwards.
Chosen answer: It's close to "zdrasveetsya" phonetically, which is a colloquial greeting like: "how are you doing".
rswarrior