Luis Carlos Montalván is a disabled veteran who relies on his service dog, Tuesday, for help with daily tasks as well as emotional support. A photo-documentary from Tuesday’s perspective describes their relationship and some of their typical (visiting a veterans’ hospital) and not-so-typical (a trip to an amusement park) outings. In particular, the narrative does a remarkable job describing Luis’s PTSD in straightforward, accessible prose. “He gets nervous when people are around … or there are sudden movements … or loud sounds. So each morning, we sit together outside our apartment building, waiting, until his breathing and heartbeat tell me he’s calm. Then I walk beside him, always on his right side, so Luis knows that I am there.” Wonderful color photographs capture the loving and essential relationship between Luis and Tuesday. (Ages 7–10)