May 10, 2017 10:02 PM EDT

Former FBI Director James Comey sent a farewell letter to colleagues Wednesday, a day after his shock firing by President Donald Trump.

In the letter, first published by CNN, Comey said he would “miss the mission deeply” and that it would be “very hard” to leave his committed colleagues at the bureau.

“In times of turbulence, the American people should see the FBI as a rock of competence, honesty, and independence,” he wrote.

Read Comey’s letter below.

[CNN]

Write to Joseph Hincks at joseph.hincks@time.com.

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