Astronaut Thomas Mattingly participates in EVA simulation

S71-58148 (1 Dec. 1971) --- Astronaut Thomas K. Mattingly II, command module pilot of the planned Apollo 16 lunar landing mission, participates in extravehicular activity (EVA) simulations in the water facility tank in Building 5 at the Manned Spacecraft Center (MSC), Houston, Texas, during training preparations for the forthcoming mission. Mattingly is scheduled to perform EVA during the trans-Earth journey of the Apollo 16 mission.