President Obama has paid tribute to US envoy to Libya Chris Stevens "as everything America could want in an ambassador" as his body and three of his embassy staff were returned to US soil following the attack on the consulate in Benghazi.
The air space over Benghazi airport has reopened after an earlier security alert, the airport manager confirmed to Reuters.
President Obama vowed to do everything possible to protect Americans overseas as he honoured the four killed in the Libyan consulate attack.
Both Barack Obama and Mitt Romney know how they respond to the spread of violence across the Arab world could affect their election hopes.
Mitt Romney has attempted to score cheap, tawdry political points in the wake of the worst attack on the US diplomatic service in decades.