My father is disabled due to a stroke he had 8 years ago. He can walk 30 feet and then tires easily and needs to sit down before proceeding; he would need airport wheelchair access. Moreover, he has both a speech and comprehension impediment -- he has difficulty expressing what he wants to say and has trouble understanding (can usually understand after you repeat same sentence to him five times). He arrives TBIT at 6:40 PM on Dec 20 with one check-in luggage. Then needs to depart with United Express (Terminal 7 or 8) at 10:30 PM same evening. He is traveling alone. For a regular person not disabled, 3 hrs 45 min would be adequate. But for his disabled condition with both physical and mental difficulties, I am worried about his capability of being able to do this on his own. Could you give me some advice on his behalf.