Three-safety defense for Saints?

It wasn't too surprising when the New Orleans Saints drafted a defensive back with their first-round pick (No. 15 overall) in the draft, but it was a little surprising that it was a safety as opposed to a cornerback. The selection of Kenny Vaccaro has raised questions about the job security of incumbents Roman Harper and Malcolm Jenkins, but the reality of the situation is that all three could be playing on a significant portion of New Orleans' defensive snaps.