Reboot three times each day; though the Army assumes you know that. "Army officials said that they believed the Israeli experience was atypical--they assumed o

Reboot three times each day; though the Army assumes you know that. "Army officials said that they believed the Israeli experience was atypical--they assumed other Patriot users were not running their systems for 8 or more hours at a time. However, after analyzing the Israeli data and confirming some loss in targeting accuracy, the officials made a software change which compensated for the inaccurate time calculation. This change allowed for extended run times and was included in the modified software version that was released on February 16, 1991. However, Army officials did not use the Israeli data to determine how long the Patriot could operate before the inaccurate time calculation would render the system ineffective. On February 21, 1991, the Patriot Project Office sent a message to Patriot users stating that very long run times could cause a shift in the range gate, resulting in the target being offset. The message also said a software change was being sent that would improve the system's targeting. However, the message did not specify what constitutes very long run times. According to Army officials, they presumed that the users would not continuously run the batteries for such extended periods of time that the Patriot would fail to track targets. Therefore, they did not think that more detailed guidance was required." http://www.fas.org/spp/starwars/gao/im92026.htm http://www.fas.org/spp/starwars/gao/im92026.htm