James Antaki has worked for over 30 years on a device to help infants with holes in their hearts and other defects. Now it’s all at risk.

For James Antaki, a biomedical engineering professor at Cornell University, the $6.7 million government grant meant babies would be saved. Awarded by the Department of Defense on March 30, it would allow his team at Cornell to ramp up production and testing of PediaFlow, a device that boosts blood flow in infants with heart defects.

A week later, that all changed.

The Defense Department sent Antaki a stop-work order on April 8 informing him that his team wouldn’t get the money, intended to be distributed over four years. Three decades of research is now at risk, and Antaki said he has no idea why the government cut off funding.