This episode marks a rare occurrence in which one of Lex's many allusions to history and mythology is inaccurate. He comments to Clark that his question was like Apollo asking Icarus why he was building wings, when in fact, it was Icarus' father, Daedalus, who built them.
The bullet from the sniper rifle would leave the barrel at faster than the speed of sound. Clark would not have heard the shot until after it had hit his dad.
When Lana and Clark are lying on Lana's bed, a crew member walks by in the background.