"When a black flag is raised, signifying the average temperature on base is 90 degrees Fahrenheit or higher, commanders are encouraged to avoid any unnecessary training to prevent heat injuries." To avoid cumulative fluid depletion, track pre-practice weights over several days. Observe all athletes for signs of heat illness-fatigue, weakness, dizziness, pounding headache, visual disturbances, lethargy, cramps, inattention, confusion, nausea or vomiting, awkwardness, weak and rapid pulse, flushed appearance or fainting. Identify and observe more closely athletes at higher-than-normal risk for heat illness. Education and being proactive are the best ways to overcome any uncertainty. Not raise up in arms and be reactive calling for a stop to all things because they are unacceptable to the few.