dr. darrell gaskin. he is an associate professor of health economics at the johns hopkins bloomberg school of public health, and is also the deputy director. her -- his primary interest our health-care disparities, safety net providers, and access to health care for minority, uninsured, and other vulnerable populations. he earned his ph.d. at the johns hopkins university. he earned a b.a. degree in economics from brandeis university. dr. william spriggs was the chair of the department of economics at howard university, but is now the assistant chair for policy in the u.s. department of labour. in his role, dr. sprague's brinks -- dr. spriggs brings a unique sensitivity. in the spring of 2008, dr. sprague's co-authored -- dr. iggs code-authored. i have to say, he was also the director of the national urban league think tank here, in washington, d.c., and my former boss, when i worked there. was that, we will go in order that i introduced them, and i ask you to hold your applause until the very end. thank