It appears that in addition to being a corrupt stooge of the energy industry, he's also an abject coward:
The administrator of the US Environmental Protection Agency, historically, has had some measure of government-funded personal security detail. Agents routinely picked Gina McCarthy from the airport, for example, or accompanied her on site visits during her time as EPA administrator from July 2013 to Jan 2017. But Scott Pruitt, the new EPA chief, wishes to be guarded 24/7.Seriously, the wingnuts spend their days soiling their pants in abject terror.
The Times calls it a first for an EPA chief, and notes that the 10 additional agents would more than double the agency’s current security staff, which has hovered between six and eight agents in recent years. Similarly, security detail for education secretary Betsy DeVos has reached unprecedented levels: Typically, the secretary of education is guarded by about six agents from within the Department of Education. Since her contentious confirmation, DeVos has been under the protection of the US Marshals Service, costing $8 million over eight months.
What security menace is Pruitt guarding against? According to Myron Ebell, who led Trump’s EPA transition team but is no longer employed by the administration, Pruitt is at risk from his own employees—and “the left.”