I've uploaded a new video of Aaron walking. It is truly amazing how quickly he is improving. He used to walk a few steps, and if he fell down, resort to crawling the rest of the way. Now, he falls quite a bit less (more when he is getting tired), and will stand back up and continue walking most of the time. Walking has definitely replaced crawling as his preferred mode of transportation. I'll remind him of this when he turns 16 and wants a car.
Here are the two video links. The first one is the original from Jan 30th. The second one is a week later. Watch them both and see for yourself how much he improved in a week!