USNI News – The plan to upgrade the Navy’s fleet of Flight IIA Arleigh Burke guided-missile destroyers with new radars and electronic warfare suites is estimated to cost about $17 billion and take anywhere from a year and a half to two years to upgrade each warship. The service has been working for the last several years to develop a plan to back fit about 20 Flight IIAs with the AN/SLQ-32(V)7 Surface Electronic Warfare Improvement Program Block 3, the AN/SPY-6 air and missile defense radar and the Baseline 10 version of the Aegis Combat System.