Kenneth Copeland Ministries has taken advantage of a Federal Aviation Administration program that keeps flights private from tracking websites, and the ministry owns five such aircraft whose flights are kept private, including the Cessna 750 Citation X noted above and a North American T-28 Trojan. United States Senator Chuck Grassley has questioned some of the flights taken by these aircraft, including layovers in Maui, Fiji, and Honolulu. The ministries say that the stopovers were for preaching or for allowing pilot rest.