Where are you 'heading'? = Where are you 'headed'? [=where are you going?]
The research committee was 'headed up' by several leading scientists.
If you keep acting like this, you'll be 'heading/headed for' trouble!
(..) Shut up, Joey! So Rachel, what're you, uh... what're you up to tonight? Well, I was kinda supposed to be headed for Aruba on my honeymoon, so nothing! Right, you're not even getting your honeymoon, God.. No, no, although, Aruba, this time of year... talk about your- -big lizards... (..)1994 TvShow: Friends Title: The One Where Monica Gets a Roommate Season: 1 Episode 1