1 00:00:00,630 --> 00:00:06,580 \h Music 2 00:00:06,580 --> 00:00:11,920 \h Preparations for STS-119, the first space shuttle mission of 2009, 3 00:00:11,920 --> 00:00:17,270 \h reached a major milestone January 14 as Discovery headed to the launch pad 4 00:00:17,270 --> 00:00:20,550 \h at NASA's Kennedy Space Center in Florida. 5 00:00:20,550 --> 00:00:25,850 \h Riding atop the crawler-transporter, Discovery began its 3.4-mile trip 6 00:00:25,850 --> 00:00:29,320 \h from the Vehicle Assembly Building to Launch Pad 39A 7 00:00:29,320 --> 00:00:31,970 \h in the chilly predawn darkness. 8 00:00:31,970 --> 00:00:35,200 \h The beginning of its trip to the pad was delayed slightly 9 00:00:35,200 --> 00:00:37,980 \h so technicians could work minor technical issues. 10 00:00:37,980 --> 00:00:41,440 \h One issue involved the mobile launcher platform heaters 11 00:00:41,440 --> 00:00:45,060 \h needed when temperatures are below 45 degrees. 12 00:00:45,060 --> 00:00:49,360 \h The slow trek to the seaside launch pad was completed by midday. 13 00:00:49,360 --> 00:00:53,310 \h Waiting at the pad was the payload, which will be transferred 14 00:00:53,310 --> 00:00:58,080 \h into the shuttle's cargo bay from the service structure's payload changeout room. 15 00:00:58,080 --> 00:01:02,870 \h Discovery's crew of seven, led by Commander Lee Archambault, will deliver 16 00:01:02,870 --> 00:01:06,890 \h and install the International Space Station's final truss segment