The U.S. is expected to take the first flight out of Baghdad, but the journey isn’t easy.

The military is holding an Olympic opening ceremony at the airport.

Military travel agency Omaha is hosting a military travel conference on Saturday to discuss security and safety at the event.

Ahead of the Games, the agency has issued a travel advisory for Iraq.

Omaha said in a statement that the airport in Baghdad has been closed due to the military operation.

Iraqi authorities have ordered travelers to check in at the Airports Authority of Iraq, the statement said.

They are asking travelers to arrive by 10 a.m. on Friday and check in with the Iraqi government.

The agency said travelers should not attempt to board any military aircraft, but instead will be given the option to use the airport’s taxiways and taxis.

For the Olympic opening ceremonies, the U.K. has already canceled two flights, citing security concerns, but London Airport Authority said it would resume service at 8 p.m., according to the Associated Press.

London is home to two major air hubs, Heathrow and Gatwick.

The first two flights to London will be a direct flight to the airport, but both will be delayed due to a “security concern,” the airport authority said.

London’s transport secretary, John Bercow, told the Associated Post that the first round of flights from London to Irbil were cancelled for security reasons.

He said the airport was “open and operating as usual,” but there was a “procedural problem” when a flight from the U-K.

to Irbid left the airport for the airport and landed at Heathrow, instead of Gatwick, due to “a technical issue.”

London’s other airport, Gatwick International, has resumed service to Irbin, and London’s Gatwick Airport Authority has said the U,K.

is in “full control of the situation.”

In the U.’s hometown of Glasgow, British Airways has canceled the second flight to Irbab and scheduled two flights from Irbil to the U., according the BBC.

The airline said it is working with the British government and British airlines on “alternative travel arrangements.”

On Thursday, U.N. Secretary-General Antonio Guterres called on countries that host the Games to implement travel bans.

He also said the Games could become a “global symbol of hope and opportunity for the world’s people.”

Guterres told reporters that if the Games were held in Iran, the United States and other countries that have banned the event, the event could become “a symbol of fear and isolation.”

U.S.-Iran tensions have been high since President Donald Trump first announced the ban in January.

Trump has accused Iran of violating a 2015 nuclear deal with world powers, and has called on Tehran to “stop their nuclear activities.”

U.NS and other world powers have said Iran is complying with the deal and has never provided any evidence to support such allegations.

Trump also has criticized Iran’s recent ballistic missile test, calling it a “very serious violation of the nuclear deal.”

Trump has said he will renegotiate the nuclear agreement with Iran, which the United Nations says has violated its commitments.