User blog comment:WeissSchneeFan/Wheres Blake? Episode 4/@comment-71.171.84.76-20130809001626

There's a possibility that there's more than one group launching. Remember the size of the orientation class, as well as the size of the training area and the number of launchers. It's conceivable that Blake is in another group either before or after this one.

I'm thinking this isn't an oversight simply because of the planning that went into this. It's hewing too much to certain standards for it to be an oversight with one of the main four characters.