There are a number of plaques describing this sculpture. One reads
“As you transform this S2F from a trusted Cold War weapon to the peaceful Grummon Greenhouse Sculpture, we wish to recognize and honor the men and women of the US Navy, who committed their lives to defend our freedon to enjoy art, fellowship, and peace. http://www.r-a-f-s.org Website of the Navy S-2 community. Pennoni Associates, Inc.”
The website is very interesting, and the sculpture is designed to serve the city of Philadelphia in peaceful ways, like serving the needy and encouraging future artists.
Dedicated to those who created this sculpture in the hope of bringing peace and love to the city of love.