This M901 is based on the M113A2 APC, since it appears that the idler has been raised. The TOW targeting head is in the stowed position, aimed to the rear and tilted down. The driver's hatch at the front left corner of the hull and the turret hatch are both open, and the cylindrical structure behind the driver's position is the commander's periscope.
Internal stowage of the vehicle can be seen here. Missile racks line the right wall, and the lower part of the turret can be seen as well. On the turret floor by the missile gunner's left foot is the weapon station emergency power battery, and the missile guidance set is on the opposite side of the turret floor. The turret slip ring can be seen directly under his seat. The gunner's seat is visible just below the monoxide warning on the engine compartment rear access panel. The turret slip ring can be seen directly under his seat.
A bench seat dominates the opposite wall of the passenger compartment.
A closer look at the interior is provided here.
The fuel tank is behind the bench, and to the front communications equipment and a fire extinguisher bottle are visible. The driver remained at the front left of the vehicle.
A portable fire extinguisher was stowed to the right of the rear ramp, and stowage for a missile tripod and launch tube was behind the missile racks.
The interior of the roof hatch was painted to match the vehicle exterior so it would not contrast when opened.
The driver's position and steering levers can be seen in this image, and the commander's periscope is visible to the left hanging down from the roof ahead of the handhold loops.
The hole in between the two missile launcher tubes houses the tracking and guidance optics. The daysight/tracker assembly is on the bottom of the opening, and the nightsight is above these.
The rear of the stowed launcher head reveals the mounting channels for the missile tubes. A machine gun mount and ammunition box mount are present at the commander's cupola, but the machine gun itself is not.
Details of the underside of the rear of the launcher head can be gleaned through the sunspot.
The hammerhead turret on this vehicle is raised and ready to fire. The rest for the missile turret can be seen towards the rear of the vehicle. This ITV was participating in Exercise REFORGER '85, and the yellow strobe light is part of a wargaming system that alerts if the vehicle has been destroyed. (Picture taken 1 Jan 1985; available from the Defense Visual Information Center.)
The reloading process is illustrated here, with the launching head tilted back so that the missiles could be inserted through the vehicle's cargo hatch. (Photo by Richard S. Eshleman.)