(CBS News) Below is a transcript of "Face the Nation" on April 21, 2013, hosted by CBS News' Bob Schieffer. Guests include: Gov. Deval Patrick, D-Mass., Boston Police Commissioner Edward Davis, CBS News' John Miller and Bob Orr, Rep. Mike McCaul, R-Texas, former New York City Mayor Rudy Giuliani, and former Secretary of Homeland Security Tom Ridge, and Blackstone founder Stephen Schwarzman. Plus a conversation on gun control with Newtown family members Neil Heslin, Carlee Soto and Erica Lafferty.
Bob Schieffer: Today on FACE THE NATION, the week from hell and back. One of America's most revered sporting events took a horrific turn, leaving us to wonder, will we ever be truly safe. The city of Boston was locked down for one of the largest manhunts in us history that ended in a dramatic firefight with police. But many questions about the two suspects remain. And we'll get the latest from Massachusetts Governor Deval Patrick, Boston Police Commissioner Edward Davis, our correspondents covering the story, John Miller and Bob Orr, plus the chairman of the House homeland security committee, Michael McCaul, and we'll get analysis from former New York mayor Rudy Giuliani and former Secretary of Homeland Security Tom Ridge. But that was not the only story this week - there was also the Senate's failure to strengthen gun control laws.
President Barack Obama: All in all, this was a pretty shameful day for Washington.
Bob Schieffer: We'll hear this morning from the Newtown victims' families
Erica Lafferty: My mom was not scared in the halls of Sandy Hook, they should not be scared to cast a vote to protect millions of innocent people.
Bob Schieffer: It was a week of lows and highs. And we'll cover it all, because this is FACE THE NATION.
Announcer: From CBS news in Washington, FACE THE NATION with Bob Schieffer.
Bob Schieffer: And Good morning again. We're going to start this morning with the very latest, and we begin with Boston Police Commissioner Ed Davis. Commissioner thank you so much for joining us. I know you told reporters earlier this morning that you can't speculate on the motives of these two young men, but can I ask you this, were they planning other acts after the bombs they set off at the marathon?
Ed Davis: I personally believe they were. I personally believe they were. We have reason to believe, based upon the evidence that was found at that scene. The explosions, the explosive ordinance that was unexploded and the fire power that they had that they were going to attack other individuals. That's my belief at this point.
Bob Schieffer: Speaking of ordinance, they had a lot of homemade bombs and other ordinance; they had guns obviously when the police encountered them that night. What kind of ordinance was this? Was it all homemade? Did they have other things and what kind of guns did they have?
Ed Davis: There were over 250 rounds of extended ammunition that was found at the scene. This was a 5-10 minute gun battle that occurred there, punctuated by loud explosions. Several explosive devices went off, they were homemade. There have been published reports that the top of the pressure cooker was discovered, and my officers reported to me that there was an extremely loud explosion followed by smaller ones as they engaged in the gun battle with the suspect so they had IEDs, they had homemade hand grenades that they were throwing at the officers. This was a heavily armed and extremely dangerous group of individuals-- not group, but two individuals.
Bob Schieffer: Commissioner, were there unexploded devices also recovered there and did you find other unexploded devices in other places?
Ed Davis: We did, we did. The scene was loaded with unexploded improvised explosive devices that actually we had to point out to the arriving officers and clear the area. They were strewing about the area, there was also one found in the motor vehicle that was abandoned, the Mercedes SUV, so this was as dangerous as it gets in urban policing.
Bob Schieffer: And were there other devices found in other places and what were these other devices? Were they pipe bombs or, give us some description?
Ed Davis: They were homemade explosives. The kettle-- the pressure cooker has been widely talked about. There is not only explosive gun powder but shrapnel that's put into this device. And there were smaller ones that were comprised of the same type of shrapnel. So there's no doubt that they were made by these two guys.
Bob Schieffer: Can you give us a number? How many approximately did you recover?
Ed Davis: There were at least four or so. I don't know exactly the number from Watertown, I haven't got the full report on it, but I saw two or three of them on the ground and there was at least one more.
Bob Schieffer: Now the suspect that you have in custody, the younger man, what is his condition this morning and have you been able to extract any information from him at this point?