Sgt. Rachel Friedman remembered the Fourth of July. She remembered when her family would drive out to Lake Havasu before it was finally closed indefinitely because of the toxic levels of pollution found in its water. She remembered how she and her brother would have their dad light sparklers for them and they would run in the night and twirl the sparkling sticks and hold them high and watch the lights flicker and fall and extinguish before finally reaching the ground. She remembered the smell and the sounds they made.