Miles Taylor, the former chief of staff at the Department of Homeland Security in the Trump administration who endorsed Joe Biden last week, has started a group of current and former administration officials and other Republican leaders who want to see President Donald Trump defeated in November.

Taylor and Elizabeth Neumann, another former senior DHS official who served in the administration, have started the Republican Political Alliance for Integrity and Reform (REPAIR), which will include people who work or have worked for Trump but want to elect Biden and reform the Republican Party.

So far, two current senior administration officials have anonymously signed on to the effort and one of them has preliminary plans to reveal their identity closer to the election and expects to get fired as a result, according to a person familiar with the project who declined to share the names of those two officials. The person also said the group is preparing another “bombshell” to be revealed as soon as Tuesday but didn’t get into any more detail when pressed.