(S (S (S (NP (BASENP (DT All) (JJ electronic) (NNS devices)) (PP (IN except) (BASENP (VBN issued) (NN materiel)))) (VP (VBP are) (VP (VBN prohibited)))) (CONJP (COMMA ,) (CC and)) (S (S (BASENP (NNS guards)) (VP (MD may) (VP (VB face) (BASENP (JJ disciplinary) (NN action))))) (SBAR (SINV (SINV (MD should) (BASENP (PRP they))) (VP (VP (VB keep) (S (BASENP (NNS detainees)) (ADJP (JJ apprised) (PP (IN of) (BASENP (JJ current) (NN affairs)))))) (CC or) (VP (VB discuss) (NP (BASENP (NNS issues)) (PP (IN in) (BASENP (PRPD their) (JJ personal) (NNS lives)))))))))) (PERIOD .))