At least he's offering to make these calls throughout the day, that right up front is showing you that he has empathy for the situation you are in. His bringing this up before you did also shows empathy for the pain and triggers he's caused you to have...these are good signs. Phoning you throughout the day will help his strength too.
These are really good signs. No, you really have no way of knowing where he is...and I'm oh-so-familiar with that thought LOL, BUT when he calls...there is background noise. Airports are something that cannot be mistaken...you will make it through this day.
