Season 1 episode: Log 51 A Jumper Code 2
Why wasn't this episode the 2nd or 3rd episode shown? It's obviously among the first to be shot. Mac makes a point that this was Reed's 3rd week on the job; Reed calls Malloy "sir" a few times as he did in the first episode; Malloy tells Reed a couple of times that he's learning; and Reed seems a bit befuddled when Brinkman razzes them for their light caseload. Yet it was the 19th episode of the series and by then Reed had a clue and he and Malloy had become pretty tight (especially in Season 1's best episode Log 33 where Reed shoots and kills a teen sniper).
Only reason I can think of about why this episode was held back was because there wasn't much action and the producers and the network wanted to showcase more exciting episodes to build an audience for the new show.
All in all, this is one of the weaker Season 1 episodes with the only real highlight being Malloy dealing with the guy trying to jump off the building.