The children of FDNY firefighters who perished on 9/11 are blossoming into a new generation of Bravest. On the eve of the 18th anniversary of the September 11, 2001 terror attacks, the current FDNY Academy class, set to graduate in two weeks, includes 13 members — 12 men and one woman — whose firefighter fathers were murdered on 9/11, The Post has learned. More.