**Exhibit 99.1**

**FISCAL YEAR-END CERTIFICATION**

**for participants in the TARP CapitalPurchase Program**

**UST Sequence Number 699**

I, Dennis A. Dysart, Interim Chief Executive Officer, certify, based on my knowledge, that: 

(i)The compensation committee of First National Corporation has discussed, reviewed, and evaluated with senior risk officers at least every six months during any part of the most recently completed fiscal year that was a TARP period, senior executiveofficer (“SEO”) compensation plans and employee compensation plans and the risks these plans pose to First National Corporation; 

(ii) The compensation committee of First National Corporation has identified and limited during any part of the most recently completed fiscal year thatwas a TARP period any features of the SEO compensation plans that could lead SEOs to take unnecessary and excessive risks that could threaten the value of First National Corporation and has identified any features of the employee compensation plansthat pose risks to First National Corporation and has limited those features to ensure that First National Corporation is not unnecessarily exposed to risks; 

(iii) The compensation committee has reviewed, at least every six months during any part of the most recently completed fiscal year that was a TARP period, the terms of each employee compensation plan andidentified any features of the plan that could encourage the manipulation of reported earnings of First National Corporation to enhance the compensation of an employee, and has limited any such features; 

(iv) The compensation committee of First National Corporation will certify to the reviews of the SEO compensation plans and employee compensation plansrequired under (i) and (iii) above; 

(v) The compensation committee of First National Corporation will provide a narrativedescription of how it limited during any part of the most recently completed fiscal year that was a TARP period the features in: 

(A) SEO compensation plans that could lead SEOs to take unnecessary and excessive risks that could threaten the value of First NationalCorporation; 

(B) Employee compensation plans that unnecessarily expose First National Corporation to risks; and 

(C) Employee compensation plans that could encourage the manipulation of reported earnings of First National Corporation to enhance thecompensation of an employee; 

(vi) First National Corporation has required that bonus payments to SEOs or any of the next twenty most highlycompensated employees, as defined in the regulations and guidance established under section 111 of EESA (bonus payments), be subject to a recovery or “clawback” provision during any part of the most recently completed fiscal year that wasa TARP period if the bonus payments were based on materially inaccurate financial statements or any other materially inaccurate performance metric criteria; 

(vii) First National Corporation has prohibited any golden parachute payment, as defined in the regulations and guidance established under section 111 of EESA, to a SEO or any of the next five most highlycompensated employees during any part of the most recently completed fiscal year that was a TARP period; 

(viii) First National Corporationhas limited bonus payments to its applicable employees in accordance with section 111 of EESA and the regulations and guidance established thereunder during any part of the most recently completed fiscal year that was a TARP period; 

(ix) First National Corporation and its employees have complied with the excessive or luxury expenditures policy, as defined in the regulations andguidance established under section 111 of EESA, during any part of the most recently completed fiscal year that was a TARP period; and any expenses that, pursuant to the policy, required approval of the board of directors, a committee of the boardof directors, an SEO, or an executive officer with a similar level of responsibility were properly approved; 

(x) First National Corporationwill permit a non-binding shareholder resolution in compliance with any applicable federal securities rules and regulations on the disclosures provided under the federal securities laws related to SEO compensation paid or accrued during any part ofthe most recently completed fiscal year that was a TARP period; 

(xi) First National Corporation will disclose the amount, nature, andjustification for the offering, during any part of the most recently completed fiscal year that was a TARP period, of any perquisites, as defined in the regulations and guidance established under section 111 of EESA, whose total value exceeds$25,000 for any employee who is subject to the bonus payment limitations identified in paragraph (viii); 

(xii) First National Corporation will disclose whether First National Corporation, the board of directors ofFirst National Corporation, or the compensation committee of First National Corporation has engaged during any part of the most recently completed fiscal year that was a TARP period a compensation consultant; and the services the compensationconsultant or any affiliate of the compensation consultant provided during this period; 

(xiii) First National Corporation has prohibited thepayment of any gross-ups, as defined in the regulations and guidance established under section 111 of EESA, to the SEOs and the next twenty most highly compensated employees during any part of the most recently completed fiscal year that was a TARPperiod; 

(xiv) First National Corporation has substantially complied with all other requirements related to employee compensation that areprovided in the agreement between First National Corporation and Treasury, including any amendments; 

(xv) First National Corporation hassubmitted to Treasury a complete and accurate list of the SEOs and the twenty next most highly compensated employees for the current fiscal year, with the non-SEOs ranked in descending order of level of annual compensation, and with the name, title,and employer of each SEO and most highly compensated employee identified; and 

(xvi) I understand that a knowing and willful false orfraudulent statement made in connection with this certification may be punished by fine, imprisonment, or both. (See, for example, 18 USC 1001.) 

 

/s/ Dennis A. Dysart
Dennis A. DysartInterim Principal Executive OfficerMarch 23, 2011