Steve, there is a video on Youtube taken that day where he says he did. He also gave statements. Chief Curry confirmed it in his statements. The 2 agents in the back seat also gave statements confirming it. Hargis also confirmed it. He said Chaney jammed it it first and raced forward to notify Curry. Lead bike cop Ellis also mentioned it is his interview. He said chaney met him and they both motored over to Curry to tell him.
In the 80's Gary Mack claimed Curry and Chaney came to him independently and said it really happened on the Stemmons onramp. That is an absurd story because by the time they where on the onramp Curry had been notified 5 different ways that the president was hit or shots were fired. They were already racing to Parkland when Mack Claimed that Chaney tried to catch up to Curry to tell him the president was hit.
Chaney was giving the most important time critical message of his career yet instead of using the radio he is supposed to try and catch Curry, but He did not know Curry was going to slow way down on the onramp and he was about 800 feet behind Curry. He would have been Chasing him down the freeway but old cop bikes(I had one) are no faster than the limo after the first couple seconds of acceleration. I don't see Mack's story as credible
