Are the flag designs for the 1991 show available anywhere? Here is a story about the 1991 show (it may have been linked previously). IDS
Zingali lamented to Mason that he “didn’t have it.” Finally, Zingali returned to the corps, and in sudden inspiration, he turned the tables. He had them separate into groups and choreograph themselves. Mason recalled the subsequent moments as something truly special.
“What I saw that night, it was like a classical musician suddenly learned about improvisation in jazz. And it was a magical moment,” said Mason. “What they created that night was something I had never witnessed. (Zingali) was like a young boy that night.”
The link also said that the two crosses is an allusion to the old and new testaments of the Bible.