According to the Daily Mail:
U.S. Border Patrol agents have seized more than 30 cans filled with marijuana that were lunched by Mexican drug smugglers over the border fence into Arizona using a cannon.
Authorities say 33 cans of pot were spotted Friday in a field near where the Colorado River crosses the U.S.-Mexico border.
They believe the cans were propelled about 500 feet into the U.S. from a pneumatic-powered cannon similar to the ones used to launch T-shirts.
After searching the area, agents recovered a carbon dioxide tank.
Mexican authorities were also notified and searched their side of the border, but no arrests have been made.
The 85 pounds of marijuana found inside what appeared to be soup cans inserted into larger sealed containers had an estimated value of $42,500. All the seized narcotics are scheduled to be destroyed.
Here's what the 33 launched cans looked like when they landed. Also, a cannon that shoots 500ft. is just a tad more tuned than what they're firing t-shirts with at stadiums and arenas.