britain s armed forces hold a full walk-through to prepare for the event today, wednesday, full walk-through to prepare for the event today, wednesday, april 27, 2011. captions paid for by nbc-universal television good morning. welcome to a special split edition of today on a wednesday morning. i m matt lauer in new york. as you heard, meredith made her way to london s trafalgar square. good morning. hey, matt. good morning to you. the square will be filled with thousands of people on friday. you can see behind me big ben and westminster abbey where the couple will be married. 5,000 members of the military did a full dress rehearsal this morning along with the rolls royce kate will take to the abbey and the carriage the royal couple will take back once they are married if it doesn t rain. that was the open carriage. the marching bands were there but didn t play music. in half an hour the royal air force will practice the flyover it will do after the kiss. it will fly ov