can get free health screenings. just head to the convention cent and nbc 4 s annl health and fness expo. it s just getting under way down. that means doreen gentzlers up early joining us fm t convention center to kick things f down there. reporter: goomorning. hardo believe but this is the 18th year for the nbc 4 health and fitness expo and we think th year will be bigger and better than ever. th is the largest free health evenof its kind in the whole couny and we think it s a terrific event and we hope a whollot of people will come down and joins this year. joining me rht now is my ss, nbc 4 presint and general manager jackie bradford. we re eited you re here and we have a lot to fer. ablutely. this is so cool. this event keeps getting bigger and better. so, really in large part than to oursponsors, shington hospita center, children s national medical center and care first, blue cross ue shield tru we couldn t do it without them and our 150 nonprofit partners. it s a f
and good morning. welcome to today on a tuesday morning. i m matt lauer. and i m ann curry in for meredith vieira. congress is asking a lot of questions about those two iowa farms that were involved in that salmonella outbreak and the recall of more than half a billion eggs. and one man is tied to both farms. absolutely. his name is jack decoster, labelled a habitual violator. this goes as far back as the 1990s. so why do his companies not face more rigorous inspections given the history of violations? we ll have the latest on that story coming up in just a couple of minutes. also ahead, new details of last february s deadly killer whale attack at seaworld in orlando. did the theme park put animal trainers at risk, and did their practices contribute to the tragic death of the 40-year-old trainer there? coming up, what a federal investigation has uncovered. plus, is this the secret to losing weight a new study has found that drinking just two glasses of water befor