Video analysis also revealed a tile shim which came out during main engine start. The orbital maneuvering system thruster in which a heater failed prior to launch (see Pre-launch concerns) was warmed by pointing it at the sun, enabling it to be used during ISS rendezvous docking operations. En route to the ISS, the -long Orbiter Boom Sensor System (OBSS) tipped with two types of lasers and a high-resolution television camera was used to inspect the underside of the shuttle for damage. Particular attention was paid to the leading edges of the shuttle's wings. The post mission management team briefing after flight day 2 revealed that the inspections had found that a gap filler was protruding on the port side lower wing, not a location of particular concern. The gap filler was not from an area which has been modified since STS-114; it had been with the vehicle since 1982. An analysis of the inspections revealed the presence of bird droppings on the leading edge of the right wing. The launch director said he saw droppings in that location before launch. During the crew press conference on landing day, the crew joked about the bird droppings, indicating that they were still present on the orbiter though rather charred. Following rendezvous with the ISS, the shuttle performed a rendezvous pitch maneuver prior to docking to allow the ISS crew to briefly inspect and photograph the Shuttle's heat shield. An uneventful docking with the space station was performed. Thomas Reiter officially became a member of the International Space Station Expedition 13 crew shortly after docking; the transfer of his personalised Soyuz spacecraft seat liner, which cushions the landing, indicated the official transfer point. The Multi-Purpose Logistics Module Leonardo was mated to the space station's Unity module. There were concerns that some straps were in the way of the docking equipment, but following video inspections of the straps they were determined not to be a problem and docking continued as planned. A number of focused inspections of the Shuttle's heat shield were conducted while it was docked to the ISS. The results of analysis of data collected by the wing leading edge sensors were discussed in the post mission management meeting briefing at the conclusion of flight day 4. The sensors were revealed to have picked up six impacts. The maximum g observed was 1.6 g, compared to ground testing where impacts producing