the kind of strawberry we ve now learned is behind that hepatitis a outbreak is it in your kitchen? and this memorial day, we travel the country. the sights and sounds honoring our heroes, the men and women we will never forget. announcer: this is nbc nightly news with lester holt good evening while this memorial day is an occasion for fun, relaxation, and remembrance, for 21 families in uvalde, texas, this marks the beginning of what will be an unimaginably painful week a funeral services for all those lives lost begin to take place. yesterday the president and first lady spent hours with the families, pledging to make sure the pain they are experiencing will lead to progress and change today, however, we are learning more about what exactly happened after the shooter arrived at the school, what law enforcement did and didn t do. plus the spotlight growing on the school s police chief who was in charge at the time and now we ve confirmed that the u.s. department of j
reporter: at the request of uvalde s mayor, the department of justice is reviewing the shooting response, to identify lessons learned and best practices, to help first responders prepare for and respond to active shooter events today at the elementary school turned crime scene, a massive memorial it s just devastating to understand what they went through, what they saw, what they heard, you know. it s just tough. reporter: the school s future, uncertain. during president biden s visit sunday, officials say they discussed federal grants to raze, then rebuild a brand new school. what happened in uvalde was a horrific act of evil. and as texans, we must come together and lift up uvalde and support them in every way that we possibly can. reporter: today marked the start of a painful week of funerals hundreds arriving to remember little 10-year-old amerie jo garza. family says the fourth grader in those fateful moments called