AN ASTAR 350 HELI PLT UNKNOWINGLY FLIES A VFR CROSS COUNTRY FLT WHEN THE OPS WERE PROHIBITED UNDER THE SPECIAL NATIONAL SECURITY NOTAM.

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FLT WAS BRIEF TO BIG BEAR ARPT; ALSO AN UNCONTROLLED FIELD. BEFORE BOTH TAKEOFFS AND LNDGS; I BOTH TALKED WITH UNICOM'S AND TRANSMITTED BLIND INFO FOR MY MOVEMENTS AND FLTS. DURING BOTH WARM-UPS I ALSO LISTENED TO LOCAL AWOS. THE ENTIRE FLT WAS THROUGH CLASS E AIRSPACE AND NO CTL ZONE OR ARPT TFC AREAS. DURING FLT; I SAW AND CONTACTED A HELI ON A CTAF FREQ TO SEE AND BE SEEN. I LANDED AT BIG BEAR CITY ARPT NEXT TO A BELL HELI THAT HAD JUST LANDED. WE BOTH HAD TALKED TO THE UNICOM FOR LNDG ADVISORIES. OTHER LIGHT ACFT HAD BEEN TAKING OFF AND LNDG IN THE MORNING. WHILE I WAS EXTREMELY AWARE OF THE ATTACK IN NY AND WAS CAREFULLY WATCHING NEWS ON TELEVISION; I WAS UNDER THE IMPRESSION THAT 8 DAYS LATER VFR RESTRS HAD BE REMOVED. AT NO TIME DID EITHER UNICOMS; AWOS; OR LCL LAW ENFORCEMENT AGENCIES EVER ADVISE ME THAT VFR FLT WAS RESTRED AT THAT TIME. I HAVE BEEN A PLT FOR ALMOST 30 YRS AND NEVER HAD ANY INFRACTION. I WOULD NEVER HAVE FLOWN THIS FLT IF I HAD ANY IDEA THE AIRSPACE WAS RESTRED. THERE CLRLY NEEDS TO BE A MUCH BETTER; COORD ACTIVE PLAN IN PLACE TO NOTIFY PLTS OF SUCH RESTRS. AWOS AND ATIS AT A MIN SHOULD AUTOMATICALLY TRANSMIT SUCH INFO AS SHOULD UNICOMS.