The American Red Cross is in desperate need of blood and platelet donations. The agency issued an emergency call for help this week. Donations generally drop during summer months due to vacations and the Fourth of July holiday. Red Cross officials remind you it takes just one pint of blood to save as many as 3 lives. Right now, the agency says the shortage is significant and is even extending hours at certain donation centers. You can find a local blood drive by downloading the Red Cross app or going to their website.