On this edition of Africa 54: VOA correspondents will join us from New York Ground Zero, the Shanksville, Pennsylvania Memorial & the U.S. Pentagon in Washington for special coverage on the 9/11/2001 20th anniversary; Envoys from the Economic Community of West African States (ECOWAS) are in Guinea's capital Conakry Friday to discuss ways to return the country to constitutional order; & local officials accuse forces from Ethiopia's Tigray of killing 120 civilians as they advanced into neighboring Amhara region, but Tigrayan forces have denied any involvement.