Originally Posted by Canarsie
Speaking from personal experience, companions may accompany Delta Air Lines SkyMiles Medallion members (usually Gold and Platinum) through the special Medallion/First Class/Business Class security line at any airport.
I was unaware of this - and it is great news as my family and I (5) are headed out of SLC tomorrow night (12/23 6:00 PM!!) and already had started to dread the congestioin and the fact that the rest of the family may have had to go through what undoubtedly is going to be a whopper of standard security lines. We will give the priority line a try.