. >> reporter: secret service agent, doug barnett is on the lookout for cyberattacks.this operations center he and other agents track malicious codes which could infect the computer networks of power grids, water companies, and even the air conditioning systems of buildings. >> concerns would pea introduction of some sort of biohazard or chemical substance. >> the lead agent says after studying russian hacks against ukrainian power systems, her team made sure buildings and companies were taking basic precautions. >> become absolutely knowledgeable as much as you can. then you get creative and you, you think about how, how could somebody harm us. >> it is okay to be a little paranoid in your job. >> right. keeps you focused. >> officials say that there its no specific or credible threat against the inauguration. scott, they are concerned about the recent attacks in france and germany involving big trucks. that's why the security perimeter here has been reinforced with barricades. >> jeff pegues in washington tonight. coming up, an update on the health of george and barb

. >> reporter: but secret service agent doug barnett is also on the lookout for cyber attacks.s track malicious codes which could affect power companies and seasons. >> a biohazard or key agent. >> reporter: the lead agent says after studying hacks her teams made sure buildings and companies were taking basic precautions. >> you become as knowledgeable as much as you can and then you get creative and through think how could somebody harm us. >> it's tock be a little paranoid in your job. >> that's right. it keeps you focused. >> reporter: officials say there's no specific or credible threat but they're concerned about big trucks. that's why the security perimeter has been reinforced with barricades. jeff pe garksz cbs news, washington. >>> coming up after your local news on "cbs this morning," the beginning of complete all-day coverage of the inauguration of donald trump as the 45th president of the united states. >>> that's the "cbs morning news" for this friday. thanks for watching. i'm anne-marie green. have a great day. -- captions by vitac -- www.vitac.com >>> this is cbs-

. >> reporter: but secret service agent doug barnett is also on the lookout for cyberattacks.t this operations center, he and other agents track malicious codes which could infect the computer networkes of power grids, water companies, and event air conditioning systems of buildings. >> some concerns would be the introduction of some sort of biohazard or chemical substance. >> reporter: the lead agent, keo dolan says, after studying russian hacks against ukrainian power systems, her team made sure buildings and companies were taking basic precautions. >> become absolutely knowledgeable as much as you can, and then you get creative, and you think about well how could somebody harm us? >> reporter: it's okay to be a little bit paranoid in your job? >> that's right, it keeps you focused. >> reporter: officials say that there is no specific or credible threat against the inauguration, but, scott, they are concerned about those recent attacks in france and germany involving big trucks, and that's why the security perimeter here has been reinforced with barricades. >> pelley: jeff p