two members of the rail crew suffered respiratory irritation, and even though centerville, pennsylvania, is rural, 15 homes needed to be evacuated. >> they were sheltering in place initially, but more for peace of mind, we took them out of their homes. >> reporter: rail officials say the truck pulled in front of the csc freight train late morning at this crossing which is marked with signs, but no crossing gates. there were more than 2,000 accidents at crossings last year, more than 1oo involving trucks. in this case officials say a small amount of the acid remains in that truck. officials say it will take some time to empty that truck and clean up the scene. as for those who evacuated, no word on when they may get back in their homes. david? >> david kerley with us tonight. david, thank you. >>> next to that new surveillance video now emerging tonight amid this question. was it a russian poison plot? a former russian spy in critical condition tonight, his daughter also critically ill. and now, that video believed to be of them in the moments before, when this was done in the uk to them

years.i have four host: ace centerville, virginia. left.conds caller: quick comment and question. i'm a pen arding, tester, i test computer systems, are not and they hackable there is malware on the before, it doesn't have to necessarily have to be hooked network v. there been independent analysis on the or tabulatioh, find ines and where can i a report? host: you know what, ace, we have to leave it there. system, michele reagan? secretary reagan: yeah, something we check for and just to let arizona voters we go and check every tabulation system before election and make sure it is setback to zero and the clean. is those systems are sealed and not and led until election day kept on live video feed. anyone in any part of the world are in h the rooms they and make sure nobody is tampering with the machines. hollan michele reagan, secretary of state in arizona, joins us in "50 ix on the c-span capitals tour." we want to thank our partners in phoenix, cox communications, next stap is sacramento, california. representativesf is in session. the speaker pro tempore: the house will be in o