Leading the National Effort. The Department of Homeland Security provides strategic guidance to public and private partners, promotes a national unity of effort, and coordinates the overall Federal effort to promote the security and resilience of the nation's critical infrastructure. November is Critical Infrastructure Security and Resilience Month.
A hamstring injury is a strain or tear to the tendons or large muscles at the back of the thigh. It's a common injury in athletes and can occur in different severities. The three grades of hamstring injury are: 1  grade 1 â a mild muscle pull or strain.ecovering from a hamstring injury may take days, weeks or months, depending on how severe the strain or tear is. A completely torn hamstring (grade 3) may take several months to heal and you'll be unable to resume training or play sport during this time.
With a first-time injury, proper care and sufficient healing time before resuming activity should prevent permanent disability. How long does a hamstring injury take to heal? The average healing times are: (1) mild strain â 2 to 10 days, (2) moderate strain â 10 days to 6 weeks, (3) severe strain â 6 to 10 weeks.The complications listed above are more likely to occur in the case of repeated injuries.amstring strains are of three types; 1  A mild or (grade I) strain, which is a slightly pulled muscle without tearing of muscle or tendon fibers. 2  There is no loss of strength. 3  A moderate or (grade II) strain, which is a tearing of fibers in a muscle or tendon or at the attachment to the bone. 4  Strength is diminished.