Andrew Chubb, hospital corpsman chief, shows local students what size needles the doctors use while checking out a school for a medical site. USS Iwo Jima is currently off the coast of Guyana in support of Continuing Promise 2010 humanitarian civic assistance mission. The assigned medical and engineering staff embarked onboard Flagship Iwo Jima will work with partner nation's teams to provide medical, dental, veterinary, engineering assistance to several different nations to improve mutual understanding of current medical issues and technology.