. "The Delta Halo Vacation is a small programming oversight in the Halo 2 campaign level Delta Halo. It allows one to go and explore many parts of the level previously thought inaccessible or just scenery. It is similar to the Rooftops Vacation, the Cairo Station Vacation, and the Metropolis Vacation."@en . . . . "The Delta Halo Vacation is a small programming oversight in the Halo 2 campaign level Delta Halo. It allows one to go and explore many parts of the level previously thought inaccessible or just scenery. It is similar to the Rooftops Vacation, the Cairo Station Vacation, and the Metropolis Vacation."@en . "Delta Halo Vacation"@en .