About 50 San Diego State students came together to form a message for President Barack Obama, writing NoKXL with their bodies and cellphone lights while laying down in front of the Conrad Prebys Aztec Student Union.

The message was a reference to the Keystone XL pipeline extension that, if built, would carry oil from Canadian tar sand to refineries in Texas, according to The Washington Post.

The event was organized for “Go Green @ the Union,” which is part of The First 9 Days at the student union series of themed days. Photographer and activist John Quigley, a 1988 dramatic arts graduate from SDSU, gave the keynote speech on sustainability. Then students went outside for the aerial photograph. According to the website Spectral Q, Quigley has shot more than “150 human aerial art images around the world on every continent.”

Check out Monday’s issue of The Aztec for more on this event.

Photo by Kevin Serrano, Staff Photographer