think would be are reasonable precautions. 3,000 students thp they had a armed resource officer a single point entry with security check to to get in the school. a large school 3,000 students is a lot of students. another thing to tom's point, the more you make it difficult for somebody to get in the classroom, if something happens in the classroom, you now make it difficult for us to come in and get you because essentially the most difficult hostage rescue is conducted in prisons. because in prisons we design them to keep people in. and we design enemy to keep people from the outside trying to get in to get the people out. when the hostage rescue folks have to try to come in or the s.w.a.t. folks, makes it difficult. >> yes. >> really difficult. >> thank you. i appreciate it. >> thanks, don. >> imagine this. you are in high school. and you hear there is a gunman. you hear shooting, people screaming. your fellow calamities are being gunned down. the only refuge is in a closet. that happened though a student who is going to join me next.