Yes, it can be changed.

I changed it from the 3 minutes ago style, to the timestamp style mainly because of user comments sent to me saying what a pain it is to figure out 5 hours ago, 28 minutes ago, etc.

This is sort of a Coke-Pepsi debate, or a Ginger-Mary Ann issue.

The military time part I understand the issue for you civilian types I'll see if I can tweak it to show date / time in regular time ... but I don't think there is a option for that.