 They sometimes will provide information directly to the pilots of aircraft in distress due to hazardous weather conditions.In addition to SIGMETs (significant meteorological events), Convective SIGMETs (significant meteorological event associated with convection), and AIRMETs (significant meteorological events generally effecting smaller aircraft) issued by the Aviation Weather Center (AWC), CWSUs issue Center Weather Advisories (CWA) and Meteorological Impact Statements (MIS) as necessary.CWSUs are staffed by around 4 NWS meteorologists (including one manager), but their operations are eventually reimbursed by the FAA's budget under an "Interagency Agreement".