Exhibit31.2

CERTIFICATION

I, Michael T. Strianese,certify that:

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| 1.  | I have reviewed thisannual report on Form 10-K of L-3 Communications Holdings, Inc. and L-3Communications Corporation; |

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| 2.  | Basedon my knowledge, this report does not contain any untrue statement of amaterial fact or omit to state a material fact necessary to make thestatements made, in light of the circumstances under which suchstatements were made, not misleading with respect to the period coveredby this report; |

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| 3.  | Based on myknowledge, the financial statements, and other financial informationincluded in this report, fairly present in all material respects thefinancial condition, results of operations and cash flows of theregistrants as of, and for, the periods presented in this report; |

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| 4.  | The registrants’ othercertifying officer and I are responsible for establishing andmaintaining disclosure controls and procedures (as defined in ExchangeAct Rules 13a-15(e) and 15d-15(e)) and internal control over financialreporting (as defined in Exchange Act Rules 13a – 15(f) and15d-15(f)) for the registrants and have: |

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|  | a)  | Designed such disclosure controls andprocedures, or caused such disclosure controls and procedures to bedesigned under our supervision, to ensure that material informationrelating to the registrants, including their consolidated subsidiaries,is made known to us by others within those entities, particularlyduring the period in which this report is being prepared; |

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|  | b)  | Designed such internal control overfinancial reporting, or caused such internal control over financialreporting to be designed under our supervision, to provide reasonableassurance regarding the reliability of financial reporting and thepreparation of financial statements for external purposes in accordancewith generally accepted accounting principles; |

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|  | c)  | Evaluated the effectiveness of theregistrants’ disclosure controls and procedures and presented inthis report our conclusions about the effectiveness of the disclosurecontrols and procedures, as of the end of the period covered by thisreport based on such evaluation; and |

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|  | d)  | Disclosed in this report any changein the registrants’ internal control over financial reportingthat occurred during the registrants’ fourth fiscal quarter thathas materially affected, or is reasonably likely to materially affect,the registrants’ internal control over financial reporting;and |

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| 5.  | The registrants’ othercertifying officer and I have disclosed, based on our most recentevaluation of internal control over financial reporting, to theregistrants’ auditors and the audit committee of theregistrants’ board of directors (or persons performing theequivalent functions): |

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|  | a)  | Allsignificant deficiencies and material weaknesses in the design oroperation of internal control over financial reporting which arereasonably likely to adversely affect the registrants’ abilityto record, process, summarize and report financial information; and |

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|  | b)  | Any fraud, whether or not material,that involves management or other employees who have a significant rolein the registrants’ internal control over financialreporting. |

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| Date: March 9, 2006                                                  |  |   |
| /s/ Michael T.Strianese                                              |  |   |
| Michael T. StrianeseSenior VicePresident and Chief Financial Officer |  |   |
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