john pike was a loose cannon, because chank chang sued him. >> university did nothing about it.y promoted john pike up. >> in fact, lieutenant pike is in charge of nearly 1/3 of uc davis' police officers, including investigators. >> these officers knew what the rules of engagement were and what was obvious there is that they violated the rules. >> calvin's lawsuit settled against uc davis for $240,000 back in 2008. as for that pepper spray event, there are now four separate investigations. including the local district attorney and a new one announced tonight that will be headed by the lapd's former police chief. reporting live, i'm robert lyles, cbs 5. >>> a college students usually go overseas to experience a new culture. three american exchange students in cairo are experiencing what it's like to be arrested. and for joining egypt's protests. they are all studying at the american university of cairo. 19-year-old gregory porter from pennsylvania, 21-year-old luke gates of indiana, and derrik sweeney from jefferson city, missouri. the school spokesperson says it's not known if t