We have made it to London!
The flight from Dallas to London was pretty long, as expected. I tried to get some sleep but was not very successful, even though I took a ZzzzQuil. I tried taking only tried half a dose because I did not know how long I would actually be able to sleep. Now my goal is to stay awake until our 7:00 flight to Johannesburg.
We were going to try to go into London for a few hours during our layover but, due to security changes, decided it was too risky to get out. We would have only had a few minutes on the ground, so we are just going to hang out at the airport.