. >> you can join them at 8:30 at seneca valley in germantown. 2-year-old jacob and 3-year-old sarah huggle have been missing for weeks. there's a $20,000 reward for information in what leads to their safe return. we talked to the children's father. even an hour of your time will help. >> there are people who work on weekends. you can come in after work, whenever you can get out there, if you can give an hour, ton of time, whatever you can give us. we need as many people as we can out there. >> there will be another search tomorrow. police believe that the children were killed and they say they do not endorse that search. >> new this morning, six people are getting medical treatment from waterside court in germantown. a hazmat team here. detectives believe that the chemical smell is related to a possible meth lab. firefighters evacuated that house. right now, the secret service is going over its safety procedures after someone jumped the white house fence and made it into the north portico. >> that there, that was the secret service shutting the white house down. they say the man's name is