A Florida state board's Aug. 5 agreement to issue $1.75 billion in tax-exempt bonds on behalf of a controversial 235-mile passenger-rail line project signals a key victory for the private company developing the Miami-to-Orlando system. Though All Aboard Florida (AAF) has started to build the $2.5-billion line’s major components, including stations in Miami, Fort Lauderdale and West Palm Beach, the Florida Development Finance Corp.'s approval of the bonding plan was viewed as key to building the rail line’s infrastructure.