With the Federal Aviation Administration's Notice To all Air Missions, or NOTAM, system back up and running, staffing remains high and systems monitoring is at an urgently high level this morning, a senior official told ABC News Thursday. Computer traffic on the NOTAM system is at super-high levels as airlines, pilots and airports start the day with normal flight operations while also trying to make up for delays and cancellations yesterday. At the same time, public and media computer traffic on the NOTAM system is running high because of global interest in the antiquated system that crashed on Wednesday. The...