Several oil rigs in the red markers may be controlled by the enemy. you may recon these rigs and eliminate the enemy there, and/or you may conduct an assault using the zodiac vehicle found in the CTLD menu. To capture the oil rigs, deploy the zodiac (see CTLD) within 6km of an oil rig and they will navigate toward it to conduct an assault.
Listen in on 250.000 Mhz UHF for their chatter and extract the troops when requested.
See also CYPRUS SHIPBOARD OPS aera of operations.