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The new clocks get the time via an atomic clock near Fort Collins , Colo ., which transmits the exact minute and second via a low-frequency radio signal . However , NIA continues to support related research , for example in the area of immune response to bioterrorism agents or infectious diseases ( e.g ., smallpox ) . Currently , DHF is treated with the same drugs used to treat traditional , i.e ., classic ( systolic ) HF . During the refugees , first four months in the U.S ., several voluntary resettlement agencies take responsibility for resettling refugees and assisting them to become self-sufficient through private initiatives without recourse to public assistance . Some of the issues of sender state maintenance may be simplified if content negotiation is used in conjunction with a facility for timely delivery ( e.g ., [ 21 ] ) .