(April 20, 2018, 12:56 PM EDT) -- WASHINGTON, D.C. — A District of Columbia Circuit U.S. Court of Appeals panel on April 17 declined to appoint counsel to a former WMATA Metro Transit Police Department probationary officer suing for age, national origin and perceived sexual orientation discrimination, ruling that the appellant has failed to demonstrate “sufficient likelihood of success on the merits” (Clifton Stanley Diaz, Jr. v. WMATA Metro Transit Police, No. 17-7055, D.C. Cir., 2018 U.S. App. LEXIS 9925)....