In the montage of Mitch's life flashing before his eyes, there are a number of clips of events that he did not witness.
When Hobie and his friends discuss him saying hello to April, a woman in a one-piece green swimsuit walks by twice going in the same direction.
In this episode (Freefall, #6.16), Mitch introduces Stephanie to his friend Tom, a doctor. However, in the previous episode (Bash at the Beach, #6.15), Stephanie is shown already dating Tom, who also diagnoses her with melanoma, (a condition which isn't mentioned in this episode at all). It's obvious that these episodes were broadcast out of order.
Mitch skydives into the ocean. At the speed he was traveling, he would almost certainly died on impact. Anything other than a perfect vertical dive would be worse than hitting concrete.