Washington (CNN) Top Transportation Security Administration management has instructed key agency officials at airports around the country to not make details public about how many officers are missing work due to the partial government shutdown, according to an internal email obtained exclusively by CNN.

The talking points sent Friday morning from TSA's deputy assistant administrator for public affairs, Jim Gregory, illustrate how the agency is working behind the scenes to control messaging on how the four-week government shutdown is impacting the agency and its security screening efforts.

"You can engage with media and address topics that touch your workforce such as how they are doing overall but there are some areas you can't address," the email states.

"Do not offer specific call out data at your airport," the email adds. "You can say you have experienced higher numbers of call outs but in partnership with the airport and airlines you are able to manage people and resources to ensure effective security is always maintained."

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