Brown Recluse Spider Bite â Stages, Symptoms, Treatment, Pictures The mouth parts on most spiders are not strong enough to bite into the human skin and hence a large percentage of the spider population across the United States is actually harmless.
Answer: The protection of U.S. sovereignty, territory, domestic population, and critical defense infrastructure against external threats and aggression, or other threats as directed by the President. The Department of Defense is responsible for homeland defense.
The Secretary of Homeland Security oversees the third largest Cabinet department and leads our nation's efforts to secure our country from terrorism to natural disasters.