Reflection on the Pentagon

Our visit to the Pentagon, made me think about national security a little bit more. Erin asked the question of since 9/11 how has security at the Pentagon changed? Our tour guide answered that additional security checkpoints were added and the entrance to the Pentagon no longer was directly connected to the Metro.

After every incidence of breached security, security measures change to protect against another breach. But because security evolves, won't threats to that security evolve too? Can we really completely deter and avoid threats and attacks as these may evolve to breach reinforced security? It's like creating a vaccine to protect against a virus, but the creation and administration of the vaccine only prompts the virus to evolve and become immune to the vaccine.

In that case, the nation may never be completely secure, only aware of threats and how to deter them.