When SG-1 went to see the 2nd stargate at Area 51, Maybourne seemed genuinely surprised and shocked (and worried) when the 'gate was found to be plastic. Jack said something threatening or angry and then it went to commercial. When we get back from commercial, suddenly Maybourne seems to know something. He said something about the gate being moved with authorization and wasn't surprised anymore. It's not like he had a chance to check around and get some answers, either; they're still in the 'garage' where the stargate was supposed to be.
Anybody else notice this? Or have any insight as to Maybourne's odd reaction?