there are other railroads that have said they can meet the deadline. other railroads have said not. amtrak also has their system has to be installed on the commuter railroads that run on amtrak's lines, new jersey transit accept ta, maryland commuter and so on. >> yeah. okay. you heard adam reese and i'm sure you're familiar with the fact that grills get installed on the amtrak trains. other trains, as well. we've talked about a fist-size projectile that may have come into this one devastating incident into the train car there. why is that not standard operating procedure? is it now? why is it? this getting rocked syndrome, how prevalent is it? >> it has been occurring for many, manial years along the northeast corridor. and the federal railroad administration a number of years