WATCH: La Crosse police send K9 Grumman into retirement with cake

K9 Bill will take over for the 10-year veteran 

He may have been the explosives detector expert but Grumman was, and may continue to be, a fixture at events for special needs kids. 

K9 Grumman was retired from explosive detector duties Thursday by the La Crosse Police Dept., as it continues to go through changes in its K9 program.

Grumman was on the job 10 years. He was brought on in cases that extended past the Wisconsin borders.

ATF rules state that an explosive detecting dog can only serve 10 years on the job.

K9 Bill will take his place and officer Dan Ulrich will be his handler.

The La Crosse P.D. K9 unit is funded mostly through private donations.