Looks like some of the Pentagon’s Missile Defense Agency employees will need to find another way to while away their downtime (do they really have that?) — officials have put the kibosh on using government computers to check out porn.

In a one-page memo, the MDA’s Executive Director John James Jr. wrote that some employees and contractors have been detected “engaging in inappropriate use of the MDA network” and that “there have been instances of … accessing websites, or transmitting messages, containing pornographic or sexually explicit images.”

The memo goes on to say that not only is such behavior unprofessional, it’s a violation of regulations and “can compromise the security of the network though the introduction of malware or malicious code.” Those who don’t stop looking at the nudie photos on government computers could lose their security clearances and even their jobs.

In other words, missile defense employees, you’ll need to launch your pocket rockets using fuel from home computers instead.