one of the great things about this book "stronger" is that it really is extremely candid. one of the things that you are so candid about is how difficult it has been this path to recovery. you had set a goal to be walking by the time of this year's marathon coming up on april 21st. how far along are you in that process, and what's been the most difficult part of it? >> i'm pretty close. i'm pretty close. i walk with crutches right now. right there, that's an early, early shot. i'm just learning how to stand. the most difficult part is maintaining -- getting your strength up. my legs are still really, really sensitive. my nerves are always shooting off, and it's just -- it's very different. it's coming along.