These are two good pictures that show how McDermott lines his players up in the 43 over and under fronts.
The picture against the cardinals shows his 43 under front (notice the 1tech right off the center, and the 3tech on the outside shoulder of the guard) He also uses a 6 or 7 technique on the strong side and a 9 tech rusher on the weak side
Going to picture 2 against the Falcons and this shows McDermott in his over front. (SLB is key)
This time the D tackles switch responsibilities and again the weak side DT plays the 1 technique. The strong side tackle plays the 3 technique. But both Defenseive ends are lined up pretty much at the 9 technique ready to pass rush
Straight out of jimmy johnsons playbook and a good way to keep offensive lines off guard
Let's hope for some front 4 magic again