TOPEKA, Kan. (AP) — The U.S. military has criticized a bill before the Kansas Legislature that narrows the definition of what’s considered an airport hazard.

The Lawrence Journal-World reports both the Army and Air Force have written letters stating that House Bill 2652 would threaten military training and deployment capabilities because it would allow development to encroach on airfields.

The bill’s supported by a company called Pflumm 143 Inc., which has been trying to develop land in Olathe near the Johnson County Executive Airport. The bill narrows the definition of airport hazard, which can be used to protect airspace from development, to physical structures only.

But critics of the bill say there are many land uses without structures that pose a threat to air safety and should be kept far away from airfields.