Polar satellites used to forecast storm tracks in the country are beyond or near their life expectancies, which is raising concerns among experts. Launching delays for replacements, mismanagement of resources and funding problems could mean the U.S. will go at least a year without certain satellites, according to three independent reviews. A $13 billion program run by NASA and the National Oceanic and Atmospheric Administration that involves the launch of Joint Polar Satellite System-1 as a replacement to the aging polar satellites was introduced to address the problem, but the program has been delayed.