As with many movies and shows, when one or several compartments are exposed to the vacuum of space, it would take mere seconds before they would be completely void of air.
Herick opens the sealed doors along his path to the hangar section facing the shuttle. With these doors opened, it would take one to two seconds to completely depressurize the areas, given the small sizes of the corridors and big doors.
Also, any engineer would have designed doors so that, in the event of a breach, they would close towards any breach, and most likely either have used double doors per bulkhead, or any compartment near would have a door opening the opposite way.
When Colonel Sheppard is sitting in the alien shuttle, there is an open Snickers chocolate bar on the dashboard, even although this is the first time someone from Earth was in the shuttle.
When the ancient man was rematerialized and revived, he spoke perfect English. The odds of this happening are very remote. This happens throughout the series and it has been established that the stargate and other Ancient technology incorporate some kind of universal translator.
When viewed carefully, English wording can be seen on some of the equipment in the ancient moon base, such as a Tektronix oscilloscope.
After Sheppard tells Jamus to step away and put the gun on the floor, he draws his sidearm, a 1911. The hammer on the 1911 is forward and won't fire if the hammer is not cocked first; it is a single-action gun.
When Herick sits in the control chair of the Shuttle, a half-eaten Snickers bar is visible on the dash. There is also a bottle of water to his left, on the floor.