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.
The signs and symptoms of a hamstring strain are: (1) pain when moving or stretching of the leg, (2) muscle spasms of the injured muscles, (3) swelling over the injury, (4) Weakened leg (moderate or severe strain), and (5) Crepitation (âcracklingâ feeling and sound when the injured area is pressed with fingers).ith 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.