To the drifters who idle daily in Travis Park, he is Rocky
Runningbear, a homeless man who plants himself on the same bench
every day and spouts science fiction, often exploding in
unthreatening anger at imagined threats and government plots.
To the father who has spent years searching movie theaters and
promenades in Santa Monica, he's Sean Masciana, a troubled
schizophrenic who disappeared in August 2008 from the sailboat
he shared with his dad in a marina on the Pacific Coast.
Shocked that Sean, 45, had surfaced in the Alamo City, Pepi
Masciana flew Tuesday from Los Angeles to approach his son in
the park and persuade him to return home.  "He means more to me
than anyone or anything on Earth," Pepi said. "He's my only son,
and he needs help."  At first, the reunion was fraught: Rocky
reared his head.  "What are you doing in my neighborhood?" he
asked when he saw his father. "I live here."  Turning to Ron
Brown, courtyard liaison at Haven for Hope, Rocky said, "I don't
know why he's here."  "I'm here beca